Of the two guys in question one seems to be a tiny indie dev making single player games. The other is a hugely established figure working on a multiplayer game.
Thor is a guy who got fired from Blizzard, got mad, made an indie game studio, has been saying he's been developing this game for uh... 7 years now, while in actuality he's been livestreaming for 10 hours a day for that time, basically not developing shit.
Chet is a writer, with literally no coding experience, who is now taking his first steps into trying to make an indie game, that is multiplayer.
Neither of these people have ever seen or used or coded any of their own network code for running any kind of server architecture, ever.