MVC is mostly a buzzword.
It used to be considered a pattern, but its original 1979 definition has been dumbed-down, passed-on, misinterpreted, taken out-of-original-context. It's been ill-redefined to the point it starts resembling a religion, and while this certainly helps its cargo cultists defending it, its name doesn't associate anymore with a solid set of guidelines. As such, it cannot really be considered a pattern anymore.
MVC was never meant to describe web applications.
Nor modern operating systems nor languages.
(some of whom actually made the 1979 definition redundant)
It was made to. And it didn't work out.
We now deal with an obscene web-mvc hybrid that, with its awful buzzword status, ill definition, and having semi-illiterate-programmers as a target demographic, makes a really bad publicity to software patterns in general.
MVC, thus, became separation of concerns distilled for people who don't really want to think too much about it.
- The data model is handled one way,
- the view in another,
- the rest is just named "controller" and left to the reader's discretion.
Web sites / web applications in the '90s did not really use to apply separation of concerns.
They were horrible botches of intermixed spaghetti code.
UI changes, redesigns, and data rearrangements were incredibly hard, expensive, long, depressing, ill-fated.
Web technologies like ASP, JSP and PHP make it too easy to intermix view concerns with data, and application concerns. Newcomers to the field usually emit inextricable code mudballs like in those old times.
Thus, a growing number of people started repeating "use MVC" in endless loops on support forums. The number of people expanded to the point of including managers and marketers, (to some the term was already familiar, from those times in gui progrmming, in which the pattern made sense) and that became the behemoth of a buzzword we have to face now.
As it stands it's common sense, not a methodology.
It's a starting point, not a solution.
It's like telling people to breathe air, or make crunches, not a cure for cancer.