What? No he didn’t. Ewan isn’t featured in the SE in any way, shape, or form. He was in the PT, and the ST also references Darth Sidious, which is another PT invention. I’ve made my peace with the PT through fan edits, so these things are fine with me.
And Alec Guinness is in TFA too, in the same line as Ewan. (Guinness says “Rey” and Ewan says “these are your first steps.”) So I really don’t understand your point with Ewan’s TFA line.
And I don’t give two shits what is officially canon or not. The OOT works with zero problems with the ST. Until something appears in an ST film that only works because of an SE change, either version of the OT is on equal footing canon wise, and I choose the original version.
A trivial detail perhaps, but doesn’t Rogue One show a ‘SE-style’ entrance for the Yavin base? That puts Disney SW in a separate canon to the unaltered OT.