Oh that's who Mullenweg is? I had a bit of an argument with him on one of the socials, I was making the argument that Zuck has very much jumped the shark but he seemed to be a big fan.

He didn't have particularly good arguments though, given the abject failure to create anything interesting since the original Facebook site (they've been making also-ran clones before buying the competition OR going into new markets and failing since the early 2010s). He has obviously ran the core money machine ruthlessly once he won social.