True, and I'm fine with the rest of your pts.
Either Jose have to play hardball drilling it into Pogba to defend or we surrender letting him free-no-defend role.
But those are under the assumption that Pogba is unwilling to do the defensive works, which I believe is false. He did expressed his discontent about it before, which is normal for an attacking player who loves to attack, and yet he did defend anyway professionally in many games.
I believe that Spurs game affects Pogba that much (it's a big game) and it's a shock Mourinho subbed him out, which have never happened before unless injury reason. I don't blame either one in this case, Pogba tried and failed (not much protection from ref for his liking) then asked Jose for a change in formation but somewhat in a disrespect way and improper timings, while Mourinho had to subbed him out so we won't concede more making it worse as Spurs are having fun shooting training with De Gea, bullying our defenders. He was illed few days/week after right?, and doesn't seem right during the Newcastle game.
Mourinho have since said he is fine with Pogba and praised his professional performance against Sevilla, which I have to inclined in agreeing (good defending first half, more advanced second half when we're in more control linked up well with Martial and Rashford, Sanchez-Lukaku-Mata are off that game). Strange not many posters are in agreement. Of course obviously not his normal standard, but from how I see it, it's solid enough and a lot better than the two games, nothing to complaint about. Improvement.
If the recent report is true (or not, doubt it actually) whence he asked Mourinho for a change in formation permanently and maybe given free-no-defensive roles, it's fine for him to confront this, but insisting upon it is not, manager still is the one that decides. Football is football. Manager decides, players perform. If he wants it, then like Carragher said, he have to earned it eg. the case of Cristiano Ronaldo under SAF, before his final two seasons where he barely do defensive works as instructed, as winger/side midfielder Ronnie did help defend a lot professionally despite his obvious limitations and dislike for it, still did enough and earned it at the end, where literally his attacks are too good to be giving him defensive responsibility. No one expects Pogba to be amazing in defend, it's the effort that counts and helpful to the team. Recent Mourinho's press conference/interviews seem to reflect this point.