Facebook, Twitter, LinkedIn, Instagram, tik tok, etc all have algorithms that try to bring you back, keep you on the app for as long as possible, and bring controversial things to the forefront to try to get you to engage.
DDF has none of those things built into any algorithms, and you have to seek out anything new yourself. You have to actively subscribe to things you want notifications for. So I'm going to say that this is definitely not social media in the traditional sense.
I use Tapatalk, and I can't see like buttons for some reason on this forum. But I do see them on another forum I subscribe to. It's probably a setting somewhere, but it's not something I'm interested in finding regardless.