Everything I shared is from my own personal experience with using desktop Linux. Obviously your experience is going to be different from mine, as that depends on what software we use and what distro we pick.

That said. Bluetooth works as expected on my hardware. Clipboard sharing works as well, there was a time it was missing on gnome terminal but can't say am scratching my head about that one today.

Can't say I've see folder bookmarking across different file managers, even on Windows. You have to point me to examples here.

Telling a user how to reasonably fix a problem trump's whatever misconceptions you have about desktop Linux. They can always put Linux down and use whatever operating system works best for them, if they don't want to try alternative solutions.