I'd guess the speed improvement in those cases likely came from learning a better technique, like touch typing and using more of your fingers. Afaik a lot, if not most, of the fastest typists are still on qwerty.

That "officially supported" comes with a huge asterisk though. Security bulletins for old android versions already only include backports of high severity patches. On top of that the device also gets no security patches for firmware or kernel, as the hardware and kernel are eol. The FP5 is also on an eol kernel after less than 3 years, not that they were providing kernel updates in the first place. https://discuss.grapheneos.org/d/24134-devices-lacking-stand...

I thought it worked just fine on LTSC 2021 (21H2)

I think it could be interesting to explore Universal Blue based distros such as Bazzite for this kind of use cases. The OS comes from a standard OCI container image, which means you can create your own customized one by layering changes on top of an upstream base image.

I feel bad for the unsolicited distro plug though especially since you already have a solution that works well and you are familiar with, but I thought it might still be useful to mention it. I'm not sure if uBlue would even be better vs your current setup. Seems like netboot would still be needed to get the latest version without an extra reboot.

It seems this vuln was already publicized in june, or is that interview from earlier?