Everyone of course interacts with different websites in their own way, but for me, personally, I do consider Lemmy (and reddit before I migrated) to be in a different category than Facebook/twitterx/Instagram, etc.
For me, sites like this are primarily link-aggregators. Interacting with other users is a secondary function. Not that I don't do it, I'm here now writing this comment after all, but I'm not here to follow any users in particular. I have no investment in anyones life here, I'm just memeing with a bunch of anonymous strangers. It's basically the online equivalent of talking about the weather with strangers at a bus stop. Sure it's technically social, but I'm not really developing any kind of relationship with anyone here.