Everyone is free to define “need” and who their friends should be as strictly as they want, because, sure, some people could become total hermits. But it’s not going to strike most people as a reasonable definition.

You mention “FB and Instagram”, and I haven’t used either in a decade myself. But the OP did mention “Meta products” and you are ignoring the elephant in the room: WhatsApp. In many countries it has completely replaced the PSTN: you cannot contact a business (they won’t answer normal calls and may not post email addresses), cannot get the necessary info on how to check into the reception-less accommodation one booked, and one will find it hard to maintain contact with people one may well wish to maintain contact with.