Social media presence as in having accounts in your name with you being visible in the profile picture in mainstream sites (Anything Meta, Twitter, Snapchat, Tiktok…). I don’t consider anynounmous accounts on Lemmy, Reddit, Kbin relevant to the scope of this question.
The only reason I have social media accounts under my wallet name is to avoid anyone wondering why I’m not on social media (also: grandparents). Everyone IRL who I care enough about to actually explain know I login once a year in a separate browser (under incognito) and check every privacy setting from my checklist and update if it’s important (like job change). LinkedIn I check regularly, but that’s because a.) I only connect with people from work and a lot of them do think it’s important to have strong networks (and they could be right, no idea) and b.) LinkedIn has an education section that my job really likes because it has free classes and when I get bored at work, I can do a quick class in something (nothing they actually want us to do; I have to work in the nightmare that is Agile, do not make me take yet another class about the benefits of this software development hellscape, thanks).
Honestly, I try to give the impression I’m not into social media IRL; there are like, three people in my daily life who are allowed into my online life and one because we more or less both got the internet at the same time and started a mailing list together. Don’t get me wrong, I know a lot of nice people IRL, but not the type I want to introduce to the friends I made online.