I guess hell done froze over: Metallica's albums have finally been released on Tidal in the US.
Good news is they are available in Master/MQA format (for those who still care about MQA). Bad news is they are ONLY available in that format, so you have to sign up for Tidal's top tier pricing to access.
I'm not a Metallica fan per se, but I do like a bunch of their songs and it sucked to have to listen to them on Youtube instead of Tidal so this is welcome news.