I didn't find their comment clear, hence my question.
Honestly, their comment feels closer to concern trolling than a genuine grievance (not to insinuate that they're arguing in bad faith, just that the problem is so minor in comparison). Sure, I suppose Bumble could implement a per-user flag instead (at the risk of introducing a plethora of OnlyFans spam, as someone pointed out), but Bumble's new filter is significantly better than the status quo. I truly can't emphasize this point enough. The OP is imagining there's some slim minority of users who are harmed by being unable to receive unsolicited nudes -- and I'm sure that group exists somewhere -- but frankly the largest group "harmed" by Bumble's filter are perverts who get off on sending unsolicited nudes to women.
The new filter is an unambiguous improvement.
Why? He's suggesting some people like that and advocating for liberalism in this (invoking the idea that it is religious conservatism that leads companies to be averse to such things).
It could be a setting.