I don’t really care what McAvoy thinks about the future of the franchise. Sure, he’s involved in the franchise as an actor but he is not a creative or executive on any level. He has little insight as what should or what will happen with the franchise as such things are way above his pay grade. He’s a great actor but he isn’t a great source of information.
I think that there’s a better chance that Dark Phoenix makes a billion dollars than McAvoy getting any reliable information regarding Marvel’s plans for the Merry Mutants!
Joking aside, I think McAvoy is just speculating. That is all. Perhaps Kevin Feige has exchanged a few emails about his ideas for MCU X-Men with Simon Kinberg and Kinberg passed this information down to McAvoy. After all, Feige still has some communication him (Feige did have some minor input on Dark Phoenix reviewing the script) but I wouldn’t count on it. I think whatever ideas Feige has for how to introduce the Mutants will be kept soley to himself and few others he trusts.