In a sense, nothing beyond food, water and basic shelter is a necessity. Humans of the same species certainly lived somehow without whatever tech we can think of, including fire and clothing.

That said, I deleted my FB and TW/X account and while I don't miss their toxicity, I am more isolated than ever. I noticed that even for older people, their willingness to meet in person has gone down and their ability to reply to e-mails, including purely coordinational ones, is seriously shot.