"you also type the pin into the same machine... so adding a skimmer..."
There's no copying of SIM Cards.
Yes, you can still copy the magnetic stripe that's there for backwards compatibility. So, yes, it's not going to be safer while there's support for old technology.
My (European) bank issued me a chip-and-pin card without the mag stripe, good for travels, where I won't risk getting my card skimmed again.