

Idk if you’re being deliberately being obtuse, but the gay community uses these apps a lot as social media. They have group chats, friend lists, friend only conversations, video chat, and all that jazz.
Several governments and charities have also partnered with these hookup apps to disseminate updates about current events and news in the gay community, such as pertaining to STI prevention and management strategies, legislative changes, and advice on how not to get hate crimed when going out.
I was listing specific examples which appealed to your non standard definition of social media, but you’ve moved the goalposts, and ignored the extra features such as STI services that even typical social media often lack. Anyway, it seems that you have a narrow and non contemporary definition of social media. It is simply any form of mass communication over the internet, including but not limited to email mailing lists, BBS, or even “just chat” because surprise, people use these systems as social media.
Social media | Definition, History, Examples, & Facts | Britannica - https://www.britannica.com/topic/social-media