Old vs. new hardware is difficult. New hardware can also do the same with lower energy consumption.

It’s impossible to calculate, but the tipping point would be where the saved energy surpasses the energy needed for producing and transporting the hardware.

I’m quite sure that my raspi4 is more powerful, smaller, less noisy and requires less energy than my oldest computer.

The thing is just that they rarely only improve the efficiency.

I don’t have any issues on my desktop either, they both work there fine

You generally need to get software and hardware that is compatible with your operating system and processor architecture. It’s true that the most used platforms will have the best support, but you have that problem with any OS.

And it’s also not like games with anti cheat generally don’t work with Linux. Proton+Steam does support Valve Anti-Cheat, Easy Anti-Cheat and BattlEye. It’s just that developers have to explicitly enable Linux support for EAC and BattlEye.

Well, finding and reading this file definitely takes some effort, but an attacker can get your passwords that way as long as kwallet is unlocked.

They just need to run kwallet-query -r KeepassXC kdewallet to get the password and then download ~/passwords.kdbx