Since I have yet to brew an "American" style beer, and don't know if I ever will, Munich probably won't ever be milled/mashed here. With the range of styles available to me, that are from the British Isles, I can't see going to another region (style wise) for some time (if ever). I don't [really] have any interest in brewing a lager even. For one things, I don't want to set up a chamber in order to properly lager. For another, I'm very happy brewing with ale yeast.
No disrespect, but why draw a line then taunt those not on the same side as you? The use of any malt is due to many years of experimentation then adoption as a common ingredient. There is nothing sacred or blasphemous in homebrewing. The brewers that were originating the brews that you revere in the UK would have gladly used any ingredients that would have improved what they had. The notion that what one or another does is proper or improper is antithetical to homebrewing.
I am as happy with recipes containing munich malt as you are with ale yeast.