If it isn't obvious that the person is a bigger problem than everyone else yet still get kicked out then the community isn't a place I'd like to be in. Either it is full of shitty people or people get kicked out for dubious reasons.
If you can accept that a small portion of adults have judgement poor enough to cause big problems, then it doesn't seem like a big leap to accept that another larger portion of adults have judgement at a level which lacks confidence to trust assumptions in uncomfortable, high risk situations. Perhaps this is the group served by CoC?