There is no readability argument here with just short phrases and bullet points, so your stance is purely middlebrow gatekeeping.

SPJ and Tim Sweeney don't care about people who are only willing to listen when the other one does it "the right way". They put something out and if you don't like it, you can leave it unread.

I like good fonts, I have bought several "serious fonts" for private use that cost serious money. I would never use Comic Sans in larger texts. I wouldn't probably use it myself anywhere.

But this here is whimsical, and cool, and fun.

I agree, it's like clothes, sometimes it is appropriate to dress up if you want people to view what you are saying through a certain lens, wether that is wearing gold cufflinks to your job as a banker or wearing a hoodie to your job at Facebook it all signals something. Computer games are a visual medium, where aesthetics is very important, I'm not sure I would want to signal that I don't care about aesthetics to my audience, presumably quite a few of whom will be designer/programmer/artists type people (whatever you call front end in game dev).