First, let me say that I have been simming for many years - ever since the first version for the Apple II+. I also had the opportunity to get some extended experience with MS Flight.
I do not hate it. Neither do I see it (in its current state) as a replacement for FS 2004 or FSX.
The fact (IMHO) is this: MS Flight is for gamers and the gaming audience/market, MSFS is for simmers and the simming audience/market.
It's that simple. You can argue/bash/trash all you want, but it comes down to gaming vs simming.
I will stick to simming, at this point, with occasional flights of "gaming" and wait to see what develops.