You could break the security pin or use a small flat-head screwdriver.

I didn’t have a Torx screwdriver, so I broke the pin and used a regular polydrive, disconnected the red wire, and rolled tape around the exposed end.

It did let me disable it on the Xbox Accessories app back on Windows.  Then it stopped working, and I couldn’t open it again because it thought I had an old version of Windows for some reason. Now on Linux, it is still working aggressively to the point that the controller sometimes disconnects or falls off my hand.

Disabling it in steam input doesn’t disable it in Lutris. I have already thought about disconnecting the motors as an alternative method after making sure there’s nothing in the software that can do that, as in Windows.

Also, thanks for the info on the screwdriver.