Is MQA still a thing? Have not heard much about it in several years. Like most, bandwidth for streaming is not an issue and if one downloads "hi-res" tracks then transmission is not an issue either.
Agree it tries to sole a problem than does not exist. MQA did seem to be a stealth form of copy protection and this whole concept of being "tuned" to individual DACs where manufactures had to submit their products to be "officially" MQA compatible was pure silliness. In some ways, similar to HDCD and to some extent SACD. I will l say the original Pacific Microsonics HDCD encoder / ADC/ DAC used in mastering studios was a very nice sounding bit of kit in it's day.
MQA is a not something I would ever consider for my music playback.