People have been spouting the "AMD drivers suck" line for years. I've had minimal issues for the 5 years I've had an AMD card and they keep improving. All of my friends have AMD cards (wonder why

) and they don't have any issues either to speak of. I've had more issues out of my laptop video drivers (that I barely use). Maybe they sucked hard in the 2000's but I wouldn't say AMD's drivers are any worse than Nvidia's.
*shrug*
I would say 90% of my friends who had AMD/ATi cards had issues with drivers at one point in their ownership in the past 6 years and got pissed enough to jump ship on their next purchase.
Never owned AMD, minus a old AMD Athlon on a HP pre-built from 2007. But I can say that in the time I've been in the game, I've had a friend with a AMD driver issue that wouldn't let him start up any games, as the drivers had literally lost sections of itself and wasn't registering correctly, re-install fixed it immediately.
Recently in Nvidia's drivers scene, I suffered from the massive issues around 364.47. Updated it like usual, during install, screen goes black, artifacts, flashes, and boom: BSOD. I tried a hard reset, nothing. BSOD again. Boot into safe mode with networking, removed the driver and rolled back to an older version, and had some issues with it recognizing a new driver, and finally, after about 4 hours, got it working again after needing to take the GPU out of the case and everything to get a proper display working. Personally, this was ridiculous and completely unacceptable. Little bugs are fine, but something that BSOD's machines and causes a huge amount of legitimately concerning issues is not OK. How did that make it out of QA? Then they tried to push it off on people with multiple displays or SLI, when in reality, it happened to a little of everyone. I don't have more than one monitor or SLI and it certainly had me down for a while trying to fix it.
Moral of the story, neither are bulletproof. But that recent issue with Nvidia certainly scars them. I honestly only see Shadowplay and GeForce Experience game optimization as the only things that keep Nvidia ahead of AMD in drivers. And those aren't features that AMD couldn't add just as easily, given some effort and interest shown by consumers.