I almost skipped over this video, because I thought it was about some other drama about the origins of D&D, which is mostly just outrage tourism.
Happy to be mistaken! It's been a little bit since I watched Matt Colville, so I'll give this a watch when I have the time. And it includes a book recommendation on top of that!
This book sounds absolutely fascinating. I love weird obscure, hobby history. It's why I really miss the history segments of The Great British Bake Off (even though some people apparently found them boring?). I'll definitely have to add it to my list of books to get.