Part of it is the sunk cost fallacy. They are/were heavily invested in the community and it’s hard to walk away from something that has been important to you. I don’t necessarily disagree with you as I walked away from Reddit and only recently logged in to give away all my coins but I do empathize some with those who haven’t yet.
Had my account for 13 years and was a lurker for a while prior to that.
I thought I might miss Reddit but I really don’t. Only issue is trying to find info on random things I can’t find anywhere else.