A cycling site with 275k MAU would be in the very lowest category where compliance is things like 'having a content moderation function to review and assess suspected illegal content'. So having a report button.
Im surprised they don’t already have some form of report/flag button.
I think there’s a pretty decent argument being made here that OP is reading too far in the new rules and letting the worst case scenario get in the way of something they’re passionate about.
I wonder if they consulted with a lawyer before making this decision? That’s what I would be doing.