>>14736826As in, going to the options menu and changing the L shoulder button to function as the A button does.
That way all I have to do is hold left and right on the DPad and press L to get a new egg, occassionally dropping off the failures and making room for more eggs.
It essentially lets you play the game one handed.
They've had it since gen 3 when shoulder buttons were first a thing. Makes things a whole lot easier.