But, you see, it's not obvious or straightforward — because everyone does do something themselves. There are all these millions, billions of interactions and setups, past and ongoing, that have let the world to exactly the state it is in right this second.

It's entirely idiotic to then say "But hey, look at this single thing, I now decide to judge to be of utmost importance, what are you doing here right this second!?" Well maybe jack shit. And that may not be optimal, or it might be. But the important thing is: Any actor can find any amount of those isolated instances where someone did less/worse/different/bad, and then proceed to demand retribution on that basis and sabotage absolutely all cooperation in the process. But that is obviously idiotic.