I'm somewhere between Kitty and Ptyxis.
rotopenguin
The existing buttons are made out of a plastic that wears well when rubbing against their contact-points in the case. The plastics are chosen to be compatible, self-lubricating and "not spalling or rubbing eachother to death".
I doubt that these metalized buttons have been tested for their long-term wear characteristics.
Wait till you see a Mediatek
The PineTab doesn't even have a wifi/bt radio that's supported by its own OS. When you're an OEM and you're choosing what chips you're putting in a design, I think you should stick to chips that are usable. Chips where the manufacturer has written specs and maybe even a driver that transforms "a piece of glass with a lead frame" into something with a purpose.
Anyway, that's just how I feel.
Go to Desktop Mode, run Plasma Discover, get the Heroic flatpak, run Heroic, log into GoG there, install games.
Heroic is pretty damn good at doing the rest. It'll install the Linux or Windows version of your games, it'll add them to Steam, it'll run them. Heroic will even give Steam some coverart for your games. (Many are missing the logo, tho. DeckyLoader +SteamGridDB plugin fixes that.)
Flatseal is the tool.
(Another benefit to using the flatpak version of Steam is that Steam leaks rather substantial chunks of /dev/shm memory. The flatpak automatically cleans that up. God knows why Valve hasn't fixed this yet.)
The simplest way to opt out is to "install any other OS instead".
Hahahaha NO
The hard part is finding a stable identifier, instead of "this interface is know as sink 48 at this exact instant. It will be a completely different number tomorrow. It might even be a potato emoji, who knows?"
Might as well go for Win11, you're going to have to deal with it next year anyways.
Windows doesn't do minimal, it does whatever the hell it wants. There are some OOBE tricks to get a local account working.
I have used the privacy.sexy app to strip down some of the most obnoxious Win11 bits - be warned that you have to disable defender to have it work. Is it doing bad things? Is MS doing incredibly shady shit with their detections? Who's to say? When I turn on Defender afterwards, everything seems "fine".
There's no need to get rid of grub, or play games with different boot drives. Get to know how EFI works. Look at efibootmgr's output - that's pretty much all that the firmware knows. The firmware has multiple entries consisting of a drive (magic device number), a program path (EFI\grub\grub_x64.efi), and maybe a string to pass along. There is a priority list (0003,0001,0002) which MS occasionally likes to re-arrange.
Ghidra is properly Java, so better luck looking there.