

Not ALL the time. For the most part, you use your left thumb on the left analog stick and the D-Pad, and your right thumb on the right analog stick. But, SOMETIMES, you have to keep your character moving with the left stick while at the same time switching weapons/items with the D-Pad, especially when escaping a tough situation.
That’s what PlayStation calls them. Xbox calls them LSB and RSB (Left/Right stick button). Nintendo has no name for them, they just refer to them as “clicking the left/right stick”. Also Nintendo calls the bumpers L and R, and the triggers ZL and ZR.