OK to reiterate, here is my view
MDR is just simply the case, we are a prisoner of our own function and just what that gives unto unto our conscious awareness of things
Whether or not there is an MIR behind it is broadly a matter of belief, it is something I think to be stronger than the alternatives as a way of thinking, at least in most situations.
The strength of MDR thinking though is in freeing yourself of the necessity of all your models adding up to some consistent picture, rather than being contextual to your needs in a given circumstance. The absolute reality doesn't matter. There are strengths to tryiong to produce a GUT from one direction of understanding, but there are strengths to thinking in different ways as well. But the bottom line is relaity is what you can say is real, what is real is subject to how you define that and includes therefore in context the way you wish to see things.
There is no meaning delivered from up on high about words. They mean what we want them to mean, and never completely agree upon them. I've spent some considerable time for instance over the last year arguing about the difference between binary condition in our understanding vs binary condition in phenomena, which to someone stuck in MIR style thinking leads to category error, but to which MDR thiking will give a completely different idea, our categorization of these things extends only to the context of which we which to claim these things, it has not meaning outside of which.... I cannot pose the actual questions here as they are outside the scope of this forum, but they fit right in.
ETA: they come come under the headings of politics, linguistics and other sociological things that lie clearly outside the mandate of the rules. and thus I will not bring them up even as example... feel free to PM if you wish more info on these, but I ain't publicly posting them.