Those articles do not backup what you are claiming. You are trying very hard to complicate a simple matter just to implicate Mourinho. What happens to the rest of the team does not matter and the only focus should be the RB role
With 4-2-3-1, when we have the ball, the RB becomes a WB and pushes forward, but when we lose the ball he reverts back to his defensive RB role in a back 4. This is how the RB has always played under Mourinho. This is how Aurier played last season and this season, and and this is what is expected of Doherty. This has nothing to do with whether Reguilon and/or Davies pushes up or not.
When we have the ball, Doherty should be a WB (his more comfortable role according to you), but he has been shit. When we dont have the ball, and he is suppose to be an RB, he has actually been less shit. If your claim was true, Doherty should have been great offensively and struggling defensively, but instead he has been shit on both ends so far, and interestingly less shit defensively.
Everything else you are trying to bring into it is irrelevant nonsense.