I think I can understand where this statement comes from, and it's generally a good idea to stay away from those with bad track records and no signs of change. The wording does rub off wrong a bit because I think it's important to give unproven people a chance, especially if their circumstances have been very unkind to them. What would you count as a sufficiently active community or a qualified mentor?
Nothing wrong with keeping to oneself, in fact, I would rather trust someone who is self governed than a sheep that needs to be in a community.
Also, who deals in absolutes? People are complex. Very stupid take
Yeah, I probably wouldn't trust anyone who only looks at social proof to determine who's a good person and who isn't.