getting zapped by ~50/100v (depending on what voltage your country uses) through the x rated capacitor, at a very low current. I don't use macbooks, but tried very hard to find a usb charger that actually has a ground prong for the same reason, and they seem to straight up not exist.

It's also weird to me, since they have exposed metal and a transformer winding shorting could lead to passing through line voltage to the usb port/your phone chassis. So how does it count as double insulated?