Sure, they work somewhat. Always first to get support for the new rendering backend on linux, even before the hardware is released. However, they're plagued with issues. As a linux user of integrated intel graphics for the last 10+ years, the cycle has been: driver works with new hardware, but with major bugs that impact usability. Major bugs get ironed out in the first 6/10 months, leaving with half a dozen papercuts for a good 1-2 years. By the time the driver is stable, a new shiny rendering model/backend/engine is enabled somewhere in the stack, rolling back progress. I generally switched laptops faster than intel's ability to fix bugs on existing hardware. I have a couple good stories on certain individual series, but that's it. Not to mention, most of the driver issues are worked around in the software you're using most of the time, so the fact that you don't see issues doesn't mean the driver is working fine.
I was also disappointed recently by the AX500 driver on linux. For a good part of the last year, I couldn't get stable connections. BT was next to useless. Every driver release would fix one issue in wifi, just to break BT, and vice-versa.
For a company the size of intel and such massive marketshare in premium laptops I do not consider this acceptable.
The amdgpu driver has actually less bugs on vega currently, has opencl working right out of the box to booth. I had less issues with realtek drivers on wireless too.