Also the embossed numbers are not that common in countries outside the US. For quite a while the numbers themselves are also disappearing from the front. (If you even use the physical card rather than your phone)
I remember being mind-blown on my first trip to the US when a taxi driver took my card and literally carbon copied it manually (with a pencil and carbon copy booklet) on the spot.
I had been using my credit card for at least a decade (Europe) and it never ever occured to me that the embossed letters had any function other than aesthetic.
I had a food delivery guy use one in the US 2012/2013. It was like seeing a native tribe perform their traditional dance. It still blows my mind that chip + "signature" is a thing in the US. What good is a random indiscernible scribble on a tiny resistive touch screen as far as proving anything?
I could be wrong but I'm pretty sure it is also illegal to steal someone's credit card and use it. If you have already done that, I don't think the idea of scribbling illegally is going to warn anyone off. Chip+PIN is objectively far more secure. People used debit cards with swipe+PIN for decades just fine and chip+PIN is used in many other countries without an issue. It is just silly to keep using signature and acting like it does absolutely anything at all.
