It mostly has to do with the gender ratio. If there are women on there (common enough on many forums) or any guys who’ve never experienced any amount of sustained sexual frustration (uncommon but happens) - the incel talks start coming out. Mostly due to willful ignorance on their part.
Funny thing is religion and monogamy were built to solve this tinder problem. Society has known about it for a long time
i'd say rather than not allowed, it's more an uncomfortable truth that people are too socially stigmatized to agree or say.
I think as society sheds such stigma, over time, society becomes more progressive and "free".
- Hunter Biden laptop wasn't allowed on social media before the election under the guise of "hacking" and "misinformation".
Maybe I wasn't supposed to answer this question...