I agree, having tried an early beta of xenko I decided to wait until it was more complete.
Now we are at v2 I would expect a smoother experience than what I recently went through when setting up my new dev box ... It wasn't hard, but it was fussy and everything had to be done in just the right order.
It also automatically kicks off an install of vs community if I recall which annoyed me because I already had the enterprise edition installed.
That said ... I'd rather they focus on nicer apis or using .net core instead of portable class libs.