They touched on something that could pave the way for a new and better dating app experience. Let your exes rate you. This tell your would-be dater 1. they aren't such a POS that everyone they date ends up hating them, and 2. Would provide the real info that you'd like to see on dating profiles.
How would you deal with the issue of everyone giving you a high rating? That wouldn't fare well for relationships either as you'd assume everyone is trying to get back with said ex. Or even worse they just keep floaters around.
I really don't think everyone would have a high rating lol
but yeah, not sure how one would screen the review, maybe they have to upload a picture of you guys kissing and that let's you rate them? Who knows, but I'd trust that info more than what someone put on there themselves