Neal Young and Tidal

I read where Neal Young claimed the MQA files of his music on Tidal were not his Master recordings. Isn’t that what MQA stands for: Master Quality Authenticated. If that’s what happened, then is MQA not really a guarantee that you are getting THE Master recording? Maybe I didn’t get the story right.  Because if that’s true I would think the story would be covered in every audio publication with MQA being named the biggest hoax in years. But that isn’t happening. What’s the real story?