I don't know about other people, but the only thing I don't like about Signal is that it is centralized. It seems to be the only option to actually get everything right for security though from what I hear.
Confetti_Camouflage
Old games don't use "HDR" the same way we use it today. In old games, enabling HDR makes the lighting calculations in the game engine have infinite range which will then be mapped onto SDR colorspace, which is all software and very much supported in Linux.
If anything the screenshots show a gamma calibration issue. From my experience on Linux native Team Fortress 2, the in-game gamma slider does not do anything.
His actual computer related stuff has good advice in it but a lot surrounding that advice is indeed pretty sus or extrapolates to clownish end analysis. Like Ford patenting a speeding snitcher to put in their cars that reports other nearby speeding vehicles to the police is going to lead to the end of non-autonomous driving. I wonder if "car dependency" means anything to him. Just engage with it critically.
I use a PS5 controller connected through an 8bitdo USB adapter 2. It works great and has a much more stable connection compared to the bluetooth adapter I used to use. I've had no issues using it in xinput mode on Linux; games pick it up as a normal xbox controller and just work. The adapter also works great for bringing your own contoller to friends' houses for any console party games without having to do the bluetooth pairing roundup minigame. The only real issues I have with it is that there's no auto disconnect when it's idle, and as you mentioned the firmware flashing tools are all Windows only.
I use gifski
It's designed to squeeze the best quality possible out of the ancient format that is gif
I just cloned the existing rule for Elden Ring as a custom rule, but changed the extension to match the co-op save.