No.
I just had a discussion about this topic with a few people and I came to realize something: What made World of Warcraft popular 11 years ago, was the fact that it was INCREDIBLY more accessible and "casual" compared to the other MMO's at the time. That is what made it huge to begin with! But nowadays people actually think that being casual and accessible is what dooms WoW. Compared to what? Itself? Because no MMO that's been "hardcore" has ever had WoW's subscription numbers.
That's right, WoW never was "hardcore" to begin with! But if you compare WoW to itself, you can argue that it's become quite a lot more "casual". But why wouldn't they keep working on that since that's what made its success to begin with?
Infact, I'm curious how many of the people who would raise those complaints have played anything before WoW or during WoW.
I've played Guild Wars 2, Wildstar and FF14. As bored as I am with WoW, I got so bored with those other 3 that I didn't even play over a month in any of them. None of them put out content faster or in greater quantity than Blizzard does.
So why am I bored with it? Well, playing the same game for 11 years should quite logicly become rather boring. People are fed up with MMO's now. It's not fun anymore. It's oversaturated and quite frankly no longer interesting.