Back in the distant past of 2008, a RuneScape player by the name of Icedpizza thought my complaints about driver problems on older hardware would be easily solved by this incredible thing I’d never heard of called Ubuntu. Downloaded 8.04 Hardy Heron and my life has never been the same since.
For what it’s worth, a large number of the things you listed are actually portable into Sway, i3wm, and a lot of other tiling wms just by way of running the KDE settings daemons - I do the same kinds of things (network printer, theming, auto-mount, auto-start, XDG config, firewall, vpn, network settings, monitors, keyboard layout) just by having i3wm start up xfce-settings-daemon.
I’m not familiar enough with KDE to make promises about grub and splash, but I would imagine those would also work exactly the same as well. In fact, a little bit of searching and it looks like if you’re on Wayland you could even just replace KWin (the KDE window manager) with Sway in the startup files and be 95% of the way there. Might just need to configure a system bar or something to that effect.
Screen (and any other muxer) can scroll just fine. You just have to learn how to do it in each one. Tmux, for example, is ctrl+b [ to enter scroll mode.
mistyped file operations
Get a good TUI file manager. I use and recommend ranger.
Rescanning with modern tools is the exact definition of a remaster - Going back to the original ‘master’ copy and using modern techniques to produce a newer, better version :-)
I’ve played games on my Linux desktop without so much as even needing to care it’s running on Linux via Steam and Proton for years now, and it’s only getting better. Basically the only games I’ve seen not work are the ones with kernel level rootkit anti cheat really.
The unfortunate truth is that they do until they don’t - Anyone I’ve spoken to in the service industry has basically said that they love the good busy nights and the rest is stressful. Nobody should have to worry that they might not get generous enough customers during their workday, else basically starve. What a horrible way to live.
Worth mentioning: Anyone using TachiyomiJ2K (I use it for Surface Duo dual-screen support) or another fork with support who has some self-hosting prowess, there’s always Suwayomi - It will let you “migrate” to a third-party sources repo even if your app doesn’t support it, since it becomes your device’s only local extension.