OM I posted that it is devolving because all that is happening is two camps are restating their position over and over which no prospect of movement by either side.
Going from there to other things.
Trying to use old initial boxoffice to claim the prequels are not despised by Star Wars fans is not that accurate. Note they don't get the re-releases the original films do and that is because no one wants to see them. They have a bad reputation in the Star Wars fanbase and it is instructive that the new film took care not to reference them at all.
Rey talking to Droids - she did exactly what Luke and everyone else did. They never had her speaking machine language.
Flying the Falcon - we don't know if she ever flew a ship before. If she did then this is not a big deal.
Kylo Ren - never supposed to be reminiscent of Darth Vader. Part of the basic structure of the character is that he lacks maturity and balance.
Regarding the canon, since this is a new chapter in a story anything that happens is a change to the canon in some way. But changing fundamental concepts of the story universe? Didn't happen. First, the debated scene was not explained in the film so this is all us reading interpretations into it. Second, the whole thing has canon-fitting explanations (which occurred upthread). For example:
a) Places (and by extension objects) having an innate "Force" was established back in the Original Trilogy. In The Empire Strikes Back Luke in his training had to go into an area that per Yoda was strong with the Dark Side of the Force. When he went in there he had a vision which in ways resembled Rey's (symbolic elements, traumatic).
b) The notion that specifically an object can possess innate Force properties actually comes from (of all places) the Rebels and Clone Wars animated series. Now we know why they were included in the canon when the EU was jettisoned
This is not to say that the film does not have areas that require more explanation. It does.
For example, we know next to nothing about the overall Galactic situation. I understand it because they chose to keep the story tightly focused on their new characters but I would like some explanation in the next film. They gave us enough backstory to put character actions into context but not much more. Its questions like these I have.
But all in all I liked the film. It looks Star Wars, it feels Star Wars, it fits properly into the canon Lucasfilm has defined, acting was well above par and so on. And really where it has shortcomings they actually are pretty similar to the shortcomings in the Original Star Wars (for example being told just barely enough about backstory for the character actions to work).
It all works - as epic fantasy. As Science Fiction not so much