"i haven't agreed to be part of your scene" applies when someone is either having public sex or doing something that is explicitly foreplay. and it has to be a specifically non-sexual space.

seeing someone in leather clothes, even as a gimp, is not you being "involved in a scene" or else everyone who watched Pulp Fiction would be traumatised. seeing someone with a puppy mask is not "being involved in a scene." you see straight cis people doing more explicitly sexual things in popular media all the damn time.

your consent is not required for other people to do things that you have spuriously decided are "dirty" because you don't like being reminded sex exists. if that's a mental health trigger for you, there are ways to avoid or manage those triggers.

p.s. don't bring your kids to pride