I will use old machine until the damn thing quits on me and be happy.
D_Air1
Hell, if you had gone from an arch derived distro like EndeavourOS and just clicked the nvidia option. It would have been solved.
I recently installed it on a one plus 6t (about a month ago) cause that seemed to be what a lot of videos were using and I read it had great compatibility. Never ran into any issues with the hardware buttons not functioning since that is a big part of tampering with mobile devices.
You aren't meant to use them for managing your system. They are mainly there for development. For example, I often use them for a debian chroot on arch.
Mint doesn't even support kde, so at best you would be grabbing it from Ubuntu's repos which is probably out of date. Which leads to the problem of people on fixed release distros reporting problems that have already long since been fixed, so In addition to others suggestions of testing it out on a full plasma installation. I would also recommend testing it out on a distro known to be up to date in the first place.
First Arch and malware in the AUR now a ddos on Fedora. This is an attack on FOSS.
Or all of the above while still not being "as secure and private as promised".
This article confirms my own experiences with AI. I spend a lot more time reviewing, reprompting, and tweaking than I save on coding. Having to double check or fight it to get what I want is not a time saver. Not to say that it doesn't save time when it is right, but the thing that I never seem to get across to proponents of AI is that anytime I need to reprompt or refine, I have lost. I have officially wasted time at this point compared to simply referencing the documentation. Unless I'm generating a significant portion of code which only needs minor tweaks. I'm generally not saving time.
The only options when dealing with governments is comply or get out.
Also PKGBUILD's are the superior packaging format. Back in the day people use to talk about preferring debian or redhat based distros based on how much they liked debs or rpms. Building packages on Arch is easier than pretty much any distro I have ever tried to build packages on.

Dolphin should be qt6 for quite some time now. So you should need qt6ct. Also I'm not sure if either qt5ct or qt6ct is maintained. Their is a fork in the aur that I have been using https://aur.archlinux.org/packages/qt6ct-kde, but not sure what to do outside of arch.