He's said, in no uncertain terms, that he feels he knows better than you (for whoever "you" are) what your gamers would like - they'd like their game better his way. He doesn't have to meet them, doesn't have to play at the table. If you disagree with him, you may not realize it but you are simply mistaken. So, yes, he is saying that anyone who does not agree with him is, in fact,
wrong. Classic OneTrueWayism, I'm sorry to say.
Saying the other guy is "bad" is not part of the heart of OneTrueWayism, but insofar as they aren't giving as good a game as they might, those GMs aren't themselves as good at they could be, so they are just that little bit bad.
Well, thank you for at least suggesting that I am polite.
What I said was that your point was politely phrased. If you need me to go into that more, please take it to PM.
If there is a purpose to your post, apart from attempting to be insulting, I would like to hear it. As I argue GMs shouldn't fudge, or cops shouldn't commit crimes, I would also argue that mods shouldn't attempt to insult other posters.
The point is to make it 100% clear to the readers, so they may make well-informed decisions as to how to proceed.
If the only alternative to "OneTrueWayism" is "Absolute Relativism", then I guess you've got me.
You see, it goes like this - in OneTrueWayism, you believe you know what's best for all gamers (or, for as large a chuck of them as makes no odds). In Absolute Relativism, you believe you know that there is no one best thing for all gamers.
There is another choice. A humble one, where you believe that you know what's worked for your own people, but that your personal observations are not likely superior to those of others.