Your other point is key and that's what I said a year ago, either Martial adapts to Mourinho or he is gone. The difference between people that thinks like me and the majority of Martial's detractors is that I accept three things, first Mourinho's position is subjective, it's not because Martial doesn't fit his archetypal wide player that Martial is tactically doing something wrong, it also doesn't mean that within his tactical framework Mourinho is wrong too.
Now when I say that I'm sure that some will see as a cop out because I didn't blame anyone, the reason I don't blame anyone is because change can only happen if both side trust each others and it's important to acknowledge that there is no hierarchy in that aspect, the player and the manager have to put the same amount of work to create a bound that ideally should lead both sides to make enough steps in the same direction to see eye to eye.
That last point is what really bothers me, Mourinho knows that the role that he gave to Martial isn't ideal, he said it himself, so it's a professional fault from him, people can spout all the nonsense they want but no manager should have that type of attitude, it's his job to put players in ideal positions. On the other side Martial has not improved in some aspect of his game, his game without the ball isn't sharp, he lacks audacity and intensity with the ball, he is very efficient but he can and should be more than what he currently is, so he can't hide behind Mourinho.
And as an aside, Martial has things that Sanchez and Rashford lack, composure and efficiency. If we are serious that alone should see them on the bench instead of Martial because defensive work rate isn't a primary concern for attackers, it's something that you can balance with the defensive players and midfield, that's what every good manager does, on the other end being composed and efficient is integral to an attacker job.