MCH's situation was very frustrating too as I recall they had a lot of complaining about it and on more than one ocassion SE suggested MCH was fine, despite people saying otherwise. Though I know people don't want to wait around until 6.0, especially in cases like WHM who have waited as long as MCH has for their issues to be addressed, be told they're getting addressed...and then find they're not.
But on the note of entitlement. This is actually why boycotts can be a good thing. In nature, yes, they seem very self-entitled. "I don't like this thing, therefore I'm gonna just not partake until you give me what I want! Hmph." But a single disgruntled person doing it is gonna do nothing. A handful of disgruntled people is gonna do nothing. The scale of disgruntled people needed to be able to make a dent to get noticed where it is causing a problem for people would also be large enough to say "hey maybe we should listen if there's this many people who feel strongly about it". Because even if the OP managed to get 1000 people to join them, you're talking a player base of millions. Last I checked, 16 million.
Even 10,000 players is a tiny percentage. It'd take an awful lot of people agreeing "this is what I want", to which point it's not longer about "this is what I want" but the desire of a sizeable number of people who form a section of your customer base. So boycotts only work if enough people care about them, by which point they're justifed because so many people care about them, or enough people don't care about them and has no effect.
As for your suggestion, this has what the forums have been like since before launch - or at least, this is as far back as I've been participating, they could even go further back than from when I started getting involved.
And with regards to income. I remember looking up the figures a couple of years ago. Final Fantasy XI was the top grossing Final Fantasy title of all time, with Final Fantasy XIV in a very close second (and probably has since surpassed it). And Final Fantasy is one of SE's biggest, if not biggest, franchises. MMO's generate a lot of moolah. Especially successful ones. So whilst I don't think if they shut down the game, it'd ruin their business, but I just don't see them doing that when the game makes a lot of money. They realise its earning potential, which is why they threw so much money at it when 1.0 was such a spectacular failure. I mean, I don't expect a boycott to result in something so dramatic, but I don't think we can underestimate how big FFXIV is.