I have not. By the look it's geared towards 5th ed? When me and the girls actually have time for a girls night in (lol) we have a heavily modified 3.5 tho I do see some things that look more "how to dm this type of enemy" the article on mind flayers was a nice read.
Have you heard of dndbeyond.com?
This guy is a cosplayer. Sure, he might be cool for a day but he's still a loser the other times.