No more than working Japanese neck ties and darces will (moves you don’t need to pass to complete)… The only issue is you don’t need to pass and hold side control/mount to do leg attacks… and you defiantly want to develop that. But as long as you have those dominate positions mastered, it makes them better. For example, learning the truck doesn’t make your back attacks worse, it adds another dimension because its harder to defend when there is more to worry about that is CONNECTED. Learning a leg attack from guard can make it easier to pass not harder when you have both, same with sweeps and leg locks from the bottom. I hope that all made sense 
Pretty much what I said but way shorter incase that’s your thing

Pretty much what I said but way shorter incase that’s your thing
