What proof is there that binance did this?
However, crypto has become such a menace to society that it's time that governments do something about it, if they even can at this point.
There's the legal concept of an implicit or implied conspiracy. Usually comes up in antitrust law, where sellers raise prices at about the same time without actually getting together to talk about it.[1][2] It's a difficult area of law.
[1] https://scholarship.law.wm.edu/cgi/viewcontent.cgi?article=2...
[2] https://scholarship.law.duke.edu/cgi/viewcontent.cgi?article...
One person's menace is another person's salvation :)