The problem with reddit's panopticon moderation, with its ill defined, nebulously (and now AI) enforcement of sitewide policies, ends up repressing a negative behavior rather than refuting it, and, when people move to a similar off-reddit site, they are itching to start taking part in discourse they weren't allowed to before.
The end result is that people who are used to policing their own speech to avoid the panopticon rather than because it's the right thing to do eventually lose that moral code that was previously shaped by discourse and pushback from their peers rather than anonymous opaque moderation.