I am a bit torn. I think social media has kinda moved from things like forums and chatrooms, to twitter/Instagram and so on.
Forums are a part of social media, but when asking about someones social media accounts or activity, you don't really go to what forums they are on, it's always ticktok or Facebook.
You could also say that comment sections under articles are social media as well, but that's not the typical association with the term.
