All of that has been answered.
Nowhere in the films it hasn't and what the hell the First Order is or what the hell Snoke is hasn't been answered at all.
One of the best things about Star Wars is both it's simplicity and how it convey's setting and power dynamics through its cinematography and imagery. Disney Wars doesn't do this at all.
All of that has been answered.
Where? Explain it all then, using, not shitty novels or comics, but the actual films. If I'm a audience member watching the films, how does the Disney Wars setting make any sense whatsoever? Just the setting, don't even have to go into the absolute character assassination of Luke Skywalker.
....
Oh right, the films don't explain this at all and actually, the extended universe crap, which I have also read barely does a better job, nothing has given a decent explanation for how the Republic was conquered basically in minutes (after their main base of operations and most of their resources were obliterated) and where the fuck the First Order appeared from or Snoke with galaxy conquering resources.
Disney Wars setting makes no sense whatsoever and even worse, it erased character arc progression and story progression from the OT just so they could retread OT imagery (and do it worse). This is why "Sequel reboots" are shit because not only do we get a worse reboot, because it's a sequel, can't help itself shitting all over the originals as well.