All you complainers pay or paid for a service that is not guaranteed to be available at any given moment. Like, duh. It's part and parcel of playing an online game.
So cancel your subs or stomp your feet, toss your toys out of the pram; that's totally your prerogative. If you want to cut off your nose to spite your face, have at it.
But, don't act like you didn't know, couldn't have found out, expected X to be available at Y time, etc. If you're ignorant of how this stuff works, that's on you. The information is out there.
Online games don't work like that. Learn this mantra going forward. Online... games... don't... work... like... that. Online games may or may not be available at any given time. Online games may be down for extended periods. Online games during xpac launches will be subject to queues, long queues, really long queues, disconnects, bugs, etc., etc.
That's reality. If you're frustrated it's only because you've created a narrative in your head about FFXIV being available 24/7 bug free with short queues and no disconnects. And if you think you should have any of the preceding, you're mistaken. See the above paragraph and ANY terms of service for ANY online game.