Funny thing is I already thought of two angles that might make people willingly use that:
- Sex coaches review your recent experiences and give you advice (good or bad, just like other life advice fields).
- Proof of consent so neither party can change the story after the fact. Though the proof won't be at a scientific rigor level so it won't help as much as people will hope, though it probably will clear up some less complex cases and complicate the shit out of others.