To be honest, i've not seen anything of the downright slamming or disaster calling in ANY of the reviews i've read, even the one the OP posted.
They're all saying the game is absolutely brilliant, the design is breathtaking and that it's an absolute MUST-PLAY.
The only thing they're mentioning is that SE didnt forsee the amount of people that wanted to play it (true), and that a lot of people simply cannot play it despite wanting to (also true).
Not anywhere have i seen anything along the lines of "You shouldnt buy this game, it's crap, they ruined it, no one likes it, etc...". Just praises with some discontent about the server accesability...
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[XI] Surivere of Valefor
[XIV] Sir Surian Bedivere of Behemoth
http://na.finalfantasyxiv.com/lodestone/character/2401553/