I think it depends on what iterations you've played. In Heavensward, DRK was generally viewed as fast paced (job APM was on par with NIN) and challenging (widely viewed as the most difficult tank, and one of the more challenging jobs in general). During the transition into Stormblood, the newly introduced role action system resulted in the DRK losing a lot of actions that it had previously. The job was deliberately set at a disadvantage in both DPS (DRK was behind by about 500 dps on some fights) and utility (no job-specific raidwide mitigation at a time where Veil and Shake gave significant bonuses to LB generation) from the onset in order to move from a predominantly DRK/WAR meta to a PLD/WAR meta. And the developers responded to complaints about MP management and job difficulty that had come up during Heavensward by removing the drain from Darkside. This in turn had a knock-on effect to Dark Arts, leading to DA being weaved on most GCDs. Interestingly, the general perspectives at the time were that Stormblood was a simplified version of Heavensward DRK, with less buttons, less damage, less burst, and less utility. It was simultaneously viewed as low skill and ineffective.
It's kind of hilarious, because this entire forum was up in arms against the changes made to DRK during the transition into Stormblood. Someone who was just starting the game during Stormblood and who wasn't aware of the raid related disadvantages would probably look back fondly on it, however. In a few years I suppose we'll see mention of the 'good old days' of Shadowbringers.
