[markenqualitaet]

I think consent here is trivial to understand when you talk about a kink most everyone understands: naked skin.

Being naked isn't per se a sexual act, obviously. I don't need anyone's consent exposing my body e.g. going swimming in a lake.

On the other hand, someone getting off exposing theirselves to strangers is involving unconsenting strangers sexually.

Wearing a harness or demonstrating the lifestyle perfomatively does not include strangers in a scene.

Playing in public for e.g. public humiliation on the other hand, is involving unconsenting strangers sexually.

It's really not that hard. These concern trolls have an agenda.