I think some straw men have been put up here recently - did anybody really argue two times a week was enough for mastery? In this thread? All that I myself asked for was some respect for the committment of those who cannot.
I've been wondering the same thing. It's a long thread, so maybe I just missed those comments? But I don't recall reading anyone make that claim either.
I've read some arguments over whether or not one can improve at all over one's current level at two times a week, LOTS of arguments over the psychology and motivations of people who train two times a week, some arguments over whether and how these people harm or help the art as a whole...
But no claim that I can find or recall that one can eventually, e.g., meet or exceed the level of the current highest practitioners training two days a week? Is it there somewhere and I missed it?