Being lazy and having update-related issues with nextcloud too often for my taste I went back to the basics (as that's all I actually use 99% of the time) with Syncthing for file syncing and Radicale for caldav/carddav.
"Users will stop suggesting Linux as a realistic alternative to Windows for non-technical users"
Then their users will simply be wrong...
Non-technical users don't have any problems with Linux as an alternative. They don't know nor care what is running on their PC as long as they can click on icons opening the handful of basic programs they actually use.
It's the pseudo-technical users that think their constant MS indoctrination means they are the pinacle of experienced PC users that are the problem.
In reality all those older relatives are rather easy. They don't have a clue what they use anyway and they usually are also using their devices so little that they are not conditioned to expect all the (often questionable) Windows design decisions either.
So there is really no reason to overthink it. Install whatever Linux distribution you are most used to operating in case they actually need support. Most of the time they won't because unlike Windows it does not just break randomly or simply slows down to a crawl with accumulated bloat over time.
Because in a democracy that owner has not actually many votes. Unlike all the employees who -given results in Kentucky- probably majorily voted for Trump and are now losing their jobs because of it.
Realistically older generations didn't get new stuff in updated drivers for quite some time anyway, so yeah... Doesn't matter much.
Honestly, if I had a newer card I would be more concerned about that general shift to open source drivers at the moment as they are still far from comparable performance-wise.
I really love all my various Pis but at the moment there are so many refurbished servers available (thank Windows 11) as well as several small form factor x86 PCs that a Raspberry Pi 5 sadly is on the lower end of performance/cost.
It should be +/-∞
Minus or plus depending on the side from which you approach the limes.