To be honest, no. It does not look like a game 50k people would buy in early access to me. I would assume it has to be with some streamer playing his game [0]. Regarding your other question, I think that yes, you might have a high conception for what it takes to actually sell some games. Not to disparage on this other dev for example [1] because it sure looks like the games are well polished, but these games definitely look very unappealing to me and I'm pretty sure a lot of people as well. IIRC he talks about how people really have a fondness for specific topics in games and how one can leverage that.

[0] https://www.reddit.com/r/gamedev/comments/16p3v95/an_unexpec... [1] https://www.youtube.com/watch?v=JmwbYl6f11c