MI films have always been “just enjoy the ride and don’t think too hard about it” films. Their market is also the international market, even more than most Blockbusters these days. So a plot that doesn’t make coherant sense to US audiences doesn’t really matter.
As for the Golden Age of Prestige Television, although Game of Thrones is quite a phenomenon now, remember that two of the most popular shows are 2 and a Half Men and Big Bang Theory, both of which are pretty “stupid” shows.
NCIS is the highest rated drama, and it’s pretty dull.
