Nobody wants to make and maintain an account for every place they want to pay something for.

They could have replaced “check” with “cash”. Same idea.

RGB for Corsair (iQue on windows, open to alternatives)

What I do with my Commander is to use the onboard lighting and fan curves. Set it up on a VM or when you still have Windows.

You can also look into Liquidctl

It’s a little different when you’re getting doxxed and your family is getting pulled into it IRL.

And that functionality is in Gnome, but disabled by default IIRC. I’ve had it on for years in both PopOS and Debian so I may be wrong but I do believe it’s a Gnome feature.