Right there with you. The ability to use any system you happen to be in front of without issue is a huge boon in and of itself. I have friends who spend hours customizing every little keybind, using uncommon peripherals, etc.
Does it make them more productive? I honestly have my doubts. The number of times I've had to wait during a group project because a software update broke their keybinds, they're at another desk and are now slow because they don't have the muscle memory for 'standard' layouts, etc is not even close to zero. Even on their own systems, they spend significant time every week tweaking things. For many, I think it is a form of bikeshedding as much as anything.
Does it make them more productive? I honestly have my doubts. The number of times I've had to wait during a group project because a software update broke their keybinds, they're at another desk and are now slow because they don't have the muscle memory for 'standard' layouts, etc is not even close to zero. Even on their own systems, they spend significant time every week tweaking things. For many, I think it is a form of bikeshedding as much as anything.