Am I the only one who dislikes the GNB changes?

[CKNovel]

This sounds like poor cooldown management to me. Alternatively this could also be yet ANOTHER issue with the 2 minute META.

That's not "poor cooldown management", that's smart cooldown management. In fact, there was no cooldown management for Sonic break, you just used it as soon as possible, it was simply braindead.
We have more leeway and we are more than just "press on cooldown without thinking". Now you can freely move them around to optimize damage without suffering for a permanent drift.

The point is: Unless before, you now have a choice to express your skill and maximize damage.
It's up to you to exploit that choice, maybe when the boss/add is about to die you want to move Sonic break ahead.

I can see WHY you came to this conclusion, I just don't agree with, since Gunbreaker SHOULD be a high skill ceiling job when it comes to oGCDs such as more Continuation skills and 3 charges on ALL defensives, but again the 2 minute META kinda makes it hard for Gunbreaker to do that... Also kitchen sinking defensives feels more like poor game design as opposed to a tank buster followed by a raidwide AoE every 30 second intervals, which would make boss encounters feel more engaging as a result, unless they do kitchen sinking every 30 seconds in which case we end up right back where we started...

Kitchen sink was a poor design, I agree.
But they can simply have the boss auto dealing a lot of damage

But pressing continuation 3 times isn't skillfull, it's mere execution.
Gunbreaker never was on the high skill ceiling, it was always simple to play just very busy. Not difficult, just busy.
If you repeat that for long hours, it's just draining.

2 min meta has nothing to do with those topics, 2 min meta is boring but it's not responsible for every problems.