

the ctrl-super-alt is completely different
It’s not “completely different” … and that’s the problem. Completely different I can handle. I can manage knowing vim keybindings, readline keybindings and standard windows keybindings at the same time. What I can’t handle is: having to use command + C on one Mac and control + C on Windows to copy, but then in some cases you do use “control” on both OS-es, and sometimes control and alt are switched … It’s because they are similar but different that it’s such a mess trying to get proficient in both at the same time.
That’s another option, but it’s a bit more cumbersome having to cherrypick which exact backports you need for your specific hardware. Also, if you then for some reason don’t upgrade to the next stable release when it comes out, backports get abandoned after 1 year instead of the customary 3 years for the rest of the oldstable release.
From my experience, running trixie/testing the past year or so on a minipc with hardware that was a bit too recent for bookworm, I can say that the cadence of security patches has been about the same between bookworm and testing.
And let’s be honest, on a desktop system your main attack surface is going to be the software you go online with, i.e. the browser. So if you make sure that is kept up to date (flatpak, vendor repo, …) that already goes a long way.