Disclaimer, I haven't read all the responses to this thread...
The reason why there isn't much, and won't be much coverage on the M50 Mark II is due to the fact that Canon decided to do a firmware only upgrade to the EOS M50 (mark I) and brand it an M50 Mark II. The M50 Mark II is nothing more than an M50, original, but with newer firmware on it. This was a source of contention amongst the community here, and even DPR themselves gave a nod to the blatant marketing maneuver Canon did here.
As a former M50 owner, let me say the camera, the M50 original, is fantastic: cheap, powerful, fun. The M50 Mark II builds upon the M50 with refining it's AF capabilities a bit, and adding direct to Youtube support.
The sensor and CPU in the M50 Mark II, is the same as the mark I. It produces identical images as the Mark I, identical. It only differs in being slightly better in autofocus, and how much better nobody really knows because nobody has bothered to test the two, again, not alot of interest / spite from folks. Now throw in that it's actually somewhat hard to get your hands on anything due to COVID, new cameras included, and the few folks that are interested, might struggle a bit to get one.
I'll say have a hard look at M50 reviews, and then think, a little bit better in autofocus, and you're there.
I don't think you're nuts; even though it's 2 year old recycled DIGIC8, and 5 year old recycled sensor, the M50 Mark I is a champ even today; any improvement is just icing on the cake via the firmware upgrade on the Mark II. I would say you should strongly consider it. The only catch, is the M system as a whole lacks a truly fast zoom lens. If you're fine with juggling prime lenses for indoor/low light activity, it will serve you well.
I agree with you btw, the M50, original, and thus Mark II, may be one of the best cameras of all time for non-professionals, or even professionals to a degree. It's more than capable...
The original, M50 and 32mm f/1.4 STM
https://flic.kr/s/aHskUqR8hQ