Lego also considers the following non-SW sets as UCS (Lego Customer Service list)
7784 The Batmobile Ultimate Collectors’ Edition (2006)
76023 The Tumbler (2014)
76042 The S.H.I.E.L.D. Helicarrier (2015)
Your pov. Does not make it a universal truth.
As for MB vs UCS, honestly, who cares? If a set is good in my opinion, I buy it. If it is not, then I pass. Regardless of its UCS or MB status.
That is why the price will keep increasing insanely. If people are buying sets at stupid prices, why would the seller keep their prices low? You can blame Lego for their policy (sets not avalaible everywhere) , but buyers are also to blame IMO