I don't even understand what this criticism means. Does joking about his job title somehow mean he's full of himself? Would it be better if he said "Individual Contributor, Content & Communications at Stripe"? Some people think its arrogant to state your full job title too, like "what gives them the right to presume I care about their job so much?" or something?

IDK, i genuinely don't understand but would like to..

EDIT: or just downvote and move on that's cool too i guess. i have learned my lesson. he is disliked based on instinct and the reasoning is just post-hoc rationalization i guess. maybe asking for a justification in this regime is considered an attack.