While I don't agree with the specific stance of the OP on the particular issue, I have a big problem with the extent to which some people take the "I can do whatever I want" mentality. And this is a real problem. To be clear, I don't have a problem with anyone playing D&D however they want.

I do, however, have a big problem with people playing D&D however they want with a bunch of people who don't want to play it that way. And that is a different problem, entirely.

So, you know, communicate your expectations ahead of time, and if one person reneges or if there are irreconcilable differences, find a new game.