I'm not sold on that AIP argument, since nukes do the same thing and are probably worse at the planet-clearing job.
Lots of things are nuke immune, but less so to wasps last time I checked.
I will grant that Eyes shut them down pretty hard, but I haven't really been seeing too many of those lately. (Which is odd...)
As far as exo-waves go, if I'm getting those, then I'm not taking the AIP, which is fair to me, and doesn't really require me to do anything different. Just condense my masses of turrets and forts a little more. And if it gets really bad, I can just use that pretty golem I got to wipe them out.
If the golem was limited use, or irreparable or something, I'd probably be convinced that it was justified in its strength. But it really isn't.
I can use it over and over to wipe out whatever planet/wave/hobo I please, with admitted exceptions for Eyes and gravity effects.
Nuclear warheads are kind of ugly expensive as well, but they're only single use, every single one gives AIP, and they're hard countered by simple resistances and warhead interception.
Maybe I'm overdoing the nuke comparison, but the similarity seems very present to me.