I put some generic switch/ps4/xbox joystick covers on my Steam Controller joystick long ago so I’m still using the one I picked up back like half a decade ago. I put joystick cap covers on all my joystick from my Sony to Xbox to Deck joysticks.

Same for touchpads on my Steam Deck and Steam Controller, since use can make the surface start getting shiny. So joystick cover might be worth doing to protect the physical joystick top.