Fundamentally all businesses/entities have to decide who they want to associate with, Lichess is not required to do anything with USCF or the STL Chess Club. There's plenty of non-criminal reasons to not associate with someone which the legal system will never cover, so the fact that some action may or may not rise to the level of criminal doesn't really tell you very much in regards to what Lichess should do about it.
There's also the fact that Lichess is probably happy to associate with people who have committed other kinds of crimes - are you suggesting they should blacklist everybody who has been convicted of a crime in the past? Or should they make a list of what crimes are/aren't ok? If we're making a list of which crimes are "actually" bad, then aren't we back at the same problem of Lichess having to decide what they're ok associating with?
Additionally Lichess isn't even based in the US, so which country's criminal laws is the owner supposed to use? It's not like any of these alleged crimes could be tried in France.
There's just no other solution to what you're presenting that is reasonable at more than a surface level.
There's also the fact that Lichess is probably happy to associate with people who have committed other kinds of crimes - are you suggesting they should blacklist everybody who has been convicted of a crime in the past? Or should they make a list of what crimes are/aren't ok? If we're making a list of which crimes are "actually" bad, then aren't we back at the same problem of Lichess having to decide what they're ok associating with?
Additionally Lichess isn't even based in the US, so which country's criminal laws is the owner supposed to use? It's not like any of these alleged crimes could be tried in France.
There's just no other solution to what you're presenting that is reasonable at more than a surface level.