I agree with both positions. I think things need to be covered in the wiki, but I do think there is such a thing as an excess of detail.
For instance I know what an advanced research station is, how to capture it, and that it doesn't matter if I continue to hold it after I capture it though it does have a nice knowledge income. Those things are strategically important to know. It also might be nice if they were consolidated into one article somewhere by the way. They're kind of all over the place right now. However I do not know a complete list of every ship type I might get from one, and that's kind of nice. I'm sure the advanced players have the ship lists pretty much memorized at this point, but as a new player it's enjoyable to have an ARS be a bit like finding a treasure chest. Not only do I not know which item it will be, I don't know every item it could be either. So if there was an article that listed the ships possible for an ARS, I would prefer it was separate from the main ARS article.
Similarly I don't know everything the AI can do strategically. I know much of it is procedural so there is no possible solid list for that. However to use the example of hacking, I need to know what hacking is. I need to know the basics of what the AI does and can do in response. However some smaller possibilities I might not need to know. For instance I need to know that the AI floods me with ships if it perceives me as hacking. I would also need to know if those ships are going to follow me back through the wormhole. It might be a nice surprise, however, if the AI actually tried to block my escape on the way out. That wouldn't necessarily need to be included in the wiki article on hacking.
So I think that the idea of spoilers doesn't apply much to this game considering the complexity of the game and strategy involved. However there is possibly such a thing as too much detail. It's not really a spoiler. It's just connecting all of the dots for the player when it might be fun for the player to discover some of those connections on their own.