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.
I’ve experienced the same thing. Facebook Marketplace has also largely displaced Craigslist in my area. Though on the whole I’m still glad I deleted my Facebook account.