It's a drawn out rep faction that takes longer to do on live than PTR and is part of a piece of content that has largely been viewed as either buggy, incomplete or poorly implemented.
I don't think it's that hard to understand, to be honest. Or was that more a rhetorical question? Can't tell over text.
I mean, it is safe to expect them to make things go faster on PTR so that people can test more aspects of it. And also, the point of PTR is to tune and change things. Not to mention, exalted was originally required, so changing it to Revered means they could slow down rep gain and it still ends up faster in the end to unlock flying.
I just don't get why people are so incredibly mad about something that is a very minor inconvenience. Hell, the WQs are boring, but again they take 20 minutes per day for someone to unlock flying in ~2 weeks. If that is too much for someone, I doubt they ever unlocked pathfinder part 1.
And while you say it has been buggy, I haven't encountered a single bug and I've done WQs every day and done every invasion in NA. And to be honest, 7.2 has been an awesome patch for me so far, it added an extra 20 minutes of content per day, basically an extra emissary, but everything I was doing before is still relevant with better rewards. And I'll eventually get flying, which I clearly don't need since I've been doing fine without it for months. I think people had hugely disproportionate expectations for this patch, it gave me exactly what I expected and what I wanted. It wasn't supposed to be like Tanaan or Timeless Isle, since it didn't invalidate any prior content, simply added to it.
Just seems like the amount of vitriol is hugely disproportionate to how bad things actually are with literally every aspect of 7.2. Patch has been great so far to me...