Actually, if you read the Patreon guidelines, they DO state that they will work with law enforcement r.e. illegal content. Hence, they aren't saying that they have any desire whatsoever to 'protect' those that are sharing illegal content...
Some services to go pretty great lengths to force the 'Feds' to work through the system legally, but others are more willing to not battle the Feds so hard when they make requests. Lawyers cost money, so you have to pick your battles.
Keep in mind that the current US administration is a bit more gung ho about it's 'conservative' values, so the FBI has been a bit more brazen than in the past.