One advantage of the chip cards is that the card information needed to make purchases can't be easily skimmed or "stolen". Another is that it is more difficult to create a fake physical card. These advantages still exist regardless of what form of verification is used (or even if no verification is used).
The type of fraud you're describing, in which your card is physically lost or stolen, is a relatively small proportion of total fraud (14% according to this site). One reason this is not as big a problem is that often, if you lose your card or get robbed, you know the card is compromised and you can cancel it. (Even if it takes you a while to do this, at least you are on the alert.) The real danger comes when your card info is stolen without your knowledge, and this is harder to do with a chip card.
It's also worth noting that there are more ways for a fraudster to get nabbed than being caught red-handed entering the wrong PIN at the point of sale. The credit card companies are still tracking card usage and watching for unusual purchases that might indicate fraud. Also, sometimes fraudsters do surprisingly dumb stuff, like use the card to buy something online and mail it to themselves. So it's not correct to say that there is "zero risk of getting caught". With both stripe and chip cards, you can catch the person by tracking them via their usage of the card.
The biggest security risk with the new cards is that many vendors don't actually require use of the chip at all -- they still let you swipe. However, with changes to credit card liability policies, this is a risk for the vendors, not for you.