To be fair, though, that sort of argument as relates to the genre could be applied to LOTS of games like these.
Hell, Terraria. All you have is HP to worry about.... and even then, only some of the time. Die in Terraria on it's default mode, and all that happens is.... nothing. You'll lose some money. And even THAT is only going to matter if you were bloody stupid enough to keep all of your money with you (and there's no conceivable reason to do this, ever). Yet, Terraria, despite it's near total lack of true threat (despite all the monsters, most of which are on the weak side), is still considered a "survival" game. When really it's closest to being a randomly-generated Metroid-vania game.
As for Minecraft... that I already went into. If you want actual danger in that game, you either have to A: summon the Wither, or B: go to the bottom of the ocean, literally, as the Monuments are the one and only dangerous place in the game. Sort of. There's no point in summoning the Wither (the Nether Star has no purpose now, not after the 1.9 update), and the Monuments are just sort of... there. They don't have all that much function, unless you're after the sponges, of course. Or Prismarine, and even that's just decorative. So it's kinda like what you say with NMS: you're really only in danger of your own stupidity. Yet, many consider the game the king of the genre (including myself). Despite the existence of something like Don't Starve, and the only thing the two really share is "you have to eat".
I dunno. Genre definition frankly confuses me these days. I just stick a damn label on them and then try not to think about it too hard. I kinda miss the days where something was either trying to be Space Invaders or it was a clone of Pac-Man, and it was nice and simple. Even though I'm not really old enough to have quite experienced that specific time period. Damn well miss it anyway.
As for NMS's ending, the going theory (that I hear about) is that it actually isn't the ending. It's merely what's at the core. Apparently there's *a lot* of hints in the game's lore text that the actual end is elsewhere, which wouldn't surprise me in a game like this. Or so I hear (could be wrong); as always I don't really care about any of that myself, so I only pay attention to the bits that lead me to stuff I want; I know the Atlas thingie eventually hits the core, which is the extent of the knowledge I need for now. The core being "new game +" means... a whole lot of squat to me. LOTS of games do that. It's just as bloody stupid in those as it is in this.... always has been, always will be, at least by my view. PARTICULARLY in RPGs. I despise that genre with a blazing hatred to begin with, and that just makes those even more baffling to me. Someone I know tried to explain it once, I'm pretty sure I threw something at him.
Though, to be honest, my own view on something like this is that if you NEED the game to have some sort of satisfying STORY ending to suffice for you, and if that's the reason why you're playing said game... it's not actually that good of a game (IE, in games like Final Fantasy or whatever, where you "play it for the story" which again baffles me to no end) since it's not actually the gameplay that's pulling you into it. Which means that the gameplay probably isn't very good (and which means that this probably applies to LOTS of games right now, as I cant count the sheer number of times I've heard "play it for the story" in recent years). I'm fine with games that have no ending... there's TONS of those. I've been playing that sort since I was 3. Or games where the "ending" is "YOU FOUND THE AMULET OF THINGIE, YOU WIN, KTHXBAI!!!". Or games where there is one, and ONLY one end: "Game Over". Quite familiar with those sorts, and I don't mean shmups. As I always infuriate friends by saying: "If I want a story, I'll go read a book. I play games to play the damn games, not read or watch them". I get the feeling the NMS guys kinda had similar ideas. There's lore stuff, but the game never shoves this into your face and you have to actually look hard enough to even find it. The way I've heard it phrased by others is that the "point" of the game is just the experience it gives. Not some end goal, not some amazing story whatever. Some people like games that let them go around, explore, look at things, maybe occaisionally explode some stuff, and that makes up the experience for them. Even something like Elite: Dangerous is like this. There's no real "story" or anything to follow (unless you consider non-stop trading to be a "story"), and much of that game is a HUGE grind (way more grindy than NMS, if you play far enough in). You're not after some "end point". The point of Elite, though, is that sense of flying a ship through space, and doing the sorts of things you would think you'd do in space, with an emphasis on ship physics and stuff like space battles or whatever. It's not some big story moment that pushes players forward into keeping playing the game. Perhaps it was different with the original Elite though, heck if I know. Never played the original.
Really, I'll just never understand that idea of story goals or some specific "end" being the focus whatsoever. Don't really want to, either...
I've totally lost track of where I was going with this. I apologize if this was even more incoherent than usual. I just finished a long drive and haven't really had my caffeine yet. Which I suppose brings up the question of why I'm on the forum at the moment. Hmm.