A persona allows people who otherwise wouldn’t to experiment with being magnanimous and making/admitting mistakes(some more cautious IRL, others incapable of backing down).

OTOH, there’s always people who play Paladins on tabletop, and the mitigating factor of the Block button - most who don’t want to aren’t forced to engage with the worst of us, and blocking someone who knows you IRL has a more complicated cost/benefit calculation. This is one thing I feel cancel culture and the younger generations get right; Screw the other consequences when not blocking that shitty uncle, boss, teacher, coworker, celebrity, whoever, is letting them monopolize some of your personal time and mental energy.