To be fair, its my understanding speculative execution attacks are only useful if the user can run software on the box. So its a HUGE problem for data centres but not really an issue for home use unless you're running dodgy software.
Retbleed fix is supposed to be in kernel 5.19 but only for 64bit builds.
The mitigations for RETBleed are currently ineffective on x86_32 since entry_32.S does not use the required macros. However, for an x86_32 target, the kconfig symbols for them are still enabled by default and /sys/devices/system/cpu/vulnerabilities/retbleed will wrongly report that mitigations are in place.
Or these:
https://www.apple.com/uk/macbook-pro/
I'm using Asahi Linux exclusively on my Mac Mini now over tigervnc. Its absolutely insane how responsive it is.
Even on Macbook Pro its fast despite the lack of GPU acceleration. Main drawback is the speakers aren't working yet as they need to figure out the right values for the amp to avoid blowing them as in MacOS it cuts back the bass past around 50%, plus the touchpad doesn't work very well. I guess a lot of the magic of how well their touchpads work must be in the drivers.
In MacOS itself I just had my Macbook Pro mostly in sleep mode on battery for over two weeks with 30% battery left. I guess that makes sense given it based off a smartphone SoC but still, it kinda blows my mind. Although I have no idea what x86 Macbooks were like, I get the feeling they were fairly good in sleep mode too.