What you are saying makes a lot of sense. I find the line between self harm/ harmful practices and what’s acceptable can get somewhat blurry. Some of it seems like social norms that people have accepted without much critical thought. I know people who like to be beat to the point of crying, not because of any sexual or otherwise euphoric release, but because it feels cathartic and it helps them cry. Which probably isn’t too uncommon, but if someone were to inflict the same pain upon themselves (and let’s say they were careful about their limits and lasting damag), it would likely be considered concerning. Knife play fun, cutting bad.
It’s easy to spot the black and white cases of what’s safe and what isn’t, but sometimes the middle can get muddled… and likely better left to be determined by the individual.
The positive reinforcement thing could work if left to someone else. I get way too good at rationalizing why waiting for the reward is pointless, lol.
It would be considered rape if the person accused was a poor, non connected person with no promising future.