I don't know if he is or isn't in the MA.
As far as I know, there is no special set of physics in the MA vs the DA. If he could do it in the DA, he could do it in the MA. Are you now claiming the MA has a different flight model than the DA? I wasn't aware of that. Are you claiming that argument?
If you are claiming he can't, or are claiming it hasn't been proven, then that suggests the experiment needs to be repeated under the controlled conditions of the DA to eliminate all the variables you use for excuses. If you will admit he does, and has, then the issue is resolved.
As to you other question, I've already stated I don't see how that can be proven. SO the premise of your question assumes a fact pattern that has not been proven.
If you have evidence he has used multiple accounts to simultaneously spy and track your position, then send that the HT and I almost guarantee you he will get banned.
If you do not have such evidence, then I question what basis you are using to publicly accuse him.
If he is targeting you using the basic info openly provided to all players by HT, that violates no Terms of Service rules I am aware of and frankly I've seen grudge hunting go on in every sim since AW. You simply ask the last countryman seen getting killed by him where he was last seen and what was he flying when he killed him and the you go hunt your nemesis to satisfy a grudge. That is a basic MP game loop. Occurs in every sim. I've seen that since 1990.
As far as him playing endless hours, why is that a problem? Are there not half the players here that spend every waking moment on this game? Won't they always have some advantage over a players that only gets to play occasionally? Do you want to limit how many hours a day a player can play? Do you want HT to start charging by the hour?