You are so correct. It's typical of so many on the internet to talk about things they don't know about etc... All too often folks look at graphs and measurements and make their minds up. Folks forget how to listen. I'm on the fence over the long term viability of MQA, just like I was about so many other formats of various listening and visual's before it. Heck, I owned the Sony video format that was much better than VHS and fell through due to marketing, to laser disks to......name your tune.
I heard MQA as a dealer who had the rep in visiting with it about a year before they came to market with it and I was impressed. I have and listen to a lot of high resolution music at home. I find it's still all about how good or bad the recording is as nothing can compensate for that. I heard fully unfolded files on an all Meridian system (not my favorite high end gear) and it sounded better than the same cuts in non MQA format that they played along side. I will no doubt use it on my iPhone and through my AudioQuest Red, once that's available. I have my QX5/20 from Ayre that won't have it available, but I will listen to the Tidal stream with and without to see if I want to use it on my main rig. Again, I'm so glad it's available for some of their catalog and will be able to easily listen to cuts to see if I like it better or not.
Too many folks get hung up on 48 vs 96 vs 192 and all the number in between. Personally, I hear differences, but not huge at all. I hear much larger differences going from 16 bits to 24 bits. Adding more information seems to do much more for the musical experience in my system than the sampling rates.