No, what I am saying, they advertised the game as faithful adaptation of the tabletop’s fifth edition rules. And they kept declaring their intention to follow that rules (I am not about to link every interview they have done during the last several years). By doing so, they attracted DnD audience and changing the rules now would mean false advertisement.

The division you see does not come from "homebrew" crowd, but from people who are used to the DOS system. For the "homebrew" crowd Game Master Mode will be implemented. But the base game has to do what it promised to do.