> Does it still clog up?

Yes, even very high end printers like an Epson p5370 - https://luminous-landscape.com/the-epson-sc-p5370-printer/ "The printhead is the same relatively maintenance-light device that P900 owners (and predecessor P3880/3800 owners) really appreciate. These heads don’t clog much unless you leave the printer idle over long intervals and/or sit the printer in a very dry environment."

> Has printing quality improved?

Depends on the printer? A professional inkjet is extremely high quality these days.

>Or are they still a bag of hurt we should all just hope for better and cheaper colour laser / LED printer.

In a distant past I was tech support help desk person, which included poking the many color laser printers we had. They also actually broke all the time :(