Manjaro on my 2 year old build detected my network printer and installed it driverless - and I've never had a problem. On my more recent build (different system) it sees it, but always gives "unable to locate printer" when I try to actually print. I haven't cared enough to troubleshoot it further, but I did install the applicable drivers from the AUR to see if that helped, and it did not.

So my current experience is pretty mixed, but at one point it was flawless, and I have no doubt it's flawless for plenty others.

Regardless I literally can't remember having to even think about drivers for any other bit of hardware in at least the last ten years, so (as someone who supports Windows at work) I still think Linux wins on the driver front hands down.