if i have a business and you come destroy it and start making it obsolete then i would start making my business better to be able to compete with you but that is just me. others like PayPal know their business is old and should die soon and they can not improve it any more and it will always remain centralized so they try to postpone their death by attacking bitcoin and delaying its adoption.
Most likely bitcoin will kill PayPal that is why he is to say these kinds of things. He has seen that bitcoin can do what PayPal can do with all the same security and fees PayPal offers. Unless they keep with the technology then PayPal can thrive to survive.