Have you noticed the lack of jamming at the line by cornerbacks in today's nfl?

I just got done watching the cowboy vs giants game and I was in shock that the giants didn't jam dez Bryant at the line. Instead they let him run a free untouched route right into the end zone. Luckily for the giants dez had his hand land out of bounds. It just seems like the cornerback position has become so soft at the line of scrimmage. Very few cb's even line up within a couple yards of the wide receiver. I just wish today's cornerbacks played more like Mel Blount within the first couple of yards.