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.
As a teenager or young adult, maybe. But as you grow older less so. Adding someone on social media has never really been brought up in my current social circles. Sure the occasional linkedin invite if it’s in a professional setting, but my current group of acquaintances hasn’t really thought about adding each other on every social media platform or exchanged contacts other than phone numbers.