… for someone who knows what they’re doing. Anyone non-technical would be terrified of the steps needed to get a Linux install into a good state for their machine. It could easily take them days to get a setup that's sound (depending on the level of driver support for their hardware).

To be fair, one of the installs I did was Raspberry PI OS (funnily enough for a Raspberry PI!) - and that was the smoothest Linux install I’ve ever had.

So having a distro tuned to the hardware really does go a long way!

If you mean Linux, "a week or better" is a more realistic, yet still optimistic estimate to get "everything right". Until the next odd regressions come in during a follow-up update.