I have the rubber feet on my games, for several reasons.

Floor is vinyl tile on concrete. Was tired of every little nudge moving the game. I like them to stay lined up just so.

My shoulders were getting messed up from over-nudging, and then moving the game back. Now I get some wiggle, but the game stays put.

The rubber feet being there taught me very quickly not to nudge too hard and especially not to rage tilt. That game ain't moving, so don't _really_ screw up your shoulders by overreacting like that!

Meh, loosening them a little is a long ways from being about to fall off.

I'd opine that the main risk is the leg cutting into the side art.

Anyways, thanks to the backbox weight, one front leg can be completely off and the game will still stand on the remaining three.

This was all typed out in devil's advocate mode, though. It is still not a good idea to have loose leg bolts!