While you may be correct in most instances, I have to push back a bit. I'm also not saying the state of mule deer in Montana is great either, but it isnt as black and white as people make it out to be. These broad statements saying "there are no good mule deer ANYWHERE in the state" or conversely the guys saying "there are good bucks to be had all over, you just have to work for them" is a oversimplification. Montana is a huge state. You cant paint it that the mule deer situation is the same all over the state. In eastern MT the situation is not good because the deer are for the most part very accessible (roads, relatively flat, glassable country, etc). Conversely there are some extremely remote and difficult to reach places that do still exist in our state. As a by product of that there is infinitely less hunting pressure in some of those areas and as a result the animals have a chance to reach a higher age class.
Another reason this is all not black and white in my opinion is private land. It plays a huge part in protecting the trophy class deer that still exist on the landscape. Those deer however, often don't solely live on private land. If a person was to have time, be patient and know where to sit, there's a darn good chance they could have a chance at a mature buck when it slips up and comes off of private.
Above I've laid out two different scenarios that would consistently give a person a good chance at a mature mule deer buck on public land.
With all that said I really would love to see the mule deer managed much differently. Personally I'd love to see most all areas of the state go to a draw tag that a person could draw every other or every third year.