Ultimately, in hindsight, Cata was a great expansion. I freely admit that. But the general consensus before release was not good. Dragonflight feels much the same. The community seems really against what's been presented so far and in knowing how poorly received Cata was pre-launch, my kneejerk reaction to everyone saying it feels rushed, or feels like it has little content, is just to be patient.
MoP had similar uphill battles with convincing the community it was worth playing as the Pandaren race/lore was entirely based on a joke. The critics back then were just as ruthless. But ultimately it succeeded and was a good time. Probably my second favorite overall.