I've never used them myself, they just don't appeal to me. Of course, I have a different take on drivers... I feel the older ones have a better chance at being more stable, especially with video drivers -- this trend was more than a feeling a few years back. Honestly I also feel like with rare exception video drivers are all that really matter, and really only if you're a gamer.
As for the last question with most drivers being submitted to Microsoft for Windows update, in Windows 10 they are updated after a time when the driver gets a little age on it, assuming you don't stay up to date with the manufacturer yourself.
For example I have found that if I don't update my video card driver regularly Microsoft will do it for me, and they don't seem to follow Windows update notification rules either because I've had my system reboot for a driver update while in the bathroom and away for several minutes, as well as while working actively on it Windows rebooted in the middle of my typing code once, only to receive the update notice after the restart. Nice, Microsoft, real nice...
All that being said, it's nice I guess for a customer to get a list of things done including the word "update" for Windows and drivers and such. Makes them feel like something's being done I guess.