I keep wondering how they'd deal with things set up with M. Then I remember they don't have the same hurdles I do where I'm trying to work with my work's files in Calc...because they don't have to worry about PowerQuery anymore.
Even with M in BI, you get to a point where you realise it's so shit, once again Microsoft has left a product 70% complete, and you're better off learning python in the long run.