Oh god, it doesn’t matter. Adywan does what he wants about canon.
Couple of things about your post I feel needs to be addressed.
1 Your argument is as weak as there is, since not debating the content of the post.
2 Canon is something Disney ‘created’, as their business plan. And Disney didn’t really care about the universe’s rules Lucas created. Therefore canon is crap. Unfortunatelly.
3 So far everything Adywan changed in ep 4 is logical, so I guess it is safe to assume that what he wants to do is logical.
4 Which leads to my post of timeline, where I merely pointed out that it is completely wrong to assume that the Death Star could not have been at the planet, that Adywan inserted in ep 4 Revisited, and there is absolutely no need to change that to Scarif, because of Rogue One.
5 No one debated, nor shall debate that Adywan may insert whatever planet he feels right in his edit.
On a side note, reacting to another suggestion I read about here, the Endor theory creates timeline problems, since it is a long way from Tatooine, and much longer from Yavin, since those 2 planets are on the opposite side of the Star Wars galaxy.