I feel the big difference is between people who own music and those who stream. MQA is available on Tidal and invested with Roon that unfolds it.
I haven’t yet heard Deezer or Qobuz, because they aren’t willing to talk to Roon. Until they do, that may not change.
Buying hi-rez is still extremely expensive. For $20 a month most of the albums are available in Redbook. An awful lot of the albums I love are available in MQA. I try both and listen to the one that sounds best in my system.
Me investing in thousands of dollars for hi-rez isn’t not likely to happen. MQA gives me a whole lot for a small amount per month via Tidal.
I don’t care which master it is, I care which sounds best out of the available music I have.
Everyone’s indignation about cost is missing the point. If you use Tidal it costs nothing extra.
My suggestion is try it, even if it is only decoded in Roon and listen to what you enjoy. And if that is Redbook, then that is fine too.