I haven't tried a phillips on a socket, although I have one.
I have stripped one of the carb screws using an impact driver. That shouldn't have happened. The screws are butter soft and they must be over-torquing them at the factory.
Impact driver definitely are better than ratchet handles, for this particular application.
Luckily, the screws aren't flush. You can still wrap a pair of pliers around them.