just to remind you how insane this thing is
that crawled out of the core of the planet, that would've killed more than the snap absolutely - you could easy make the argument it would've destroyed the planet, but we suspend disbelief for that, ok - but the shockwave and disturbance in the atmosphere and fuck knows what else, planet changing for the foreseeable future at least, not so easy to suspend disbelief on things we can actually relate too, eg tsunami that would've come out of that thing (and right next to two of the earth's biggest populations...)
and then this happens
and is seen by humans peering through the clouds at earth
and then after this all these individuals that are concerned about protecting the earth from threats on planet and off planet, never mention it fucking once when we the audience engage with them
i dont wanna hear 'they could be talking about it all the time but not in the 'period' covered in the movie'
get the fuck out of here with that shit
hence, why i cant wrap my head around this having happened already, i can only see it as future