I had decent success with it on an 11th-gen Framework 13. Power management was finicky, but it was also finicky under OpenBSD, which makes me think it was a hardware or firmware issue. I haven't tried it since upgrading to the latest firmware, so maybe the combination of that plus whatever bugfixes have happened in the last couple years might've improved things.

I would seriously doubt that, when even Linux, which has broad support now conpared to 15 years ago, struggles with that.

I guess certain laptop models, those that the devs use, might be allright.

Nope. I run it under QEMU since even the nightlies don't support Ryzen power states.