You took it out of context totally. Here is the explanation they give:
"Our second goal is not nihilistic but is rather a commitment to standardization of the web as a platform. We believe in a web open to everyone to participate however they will. No locked doors. No walls. The things we do with PhoneGap are directly influenced by the work we see at the W3C, WHATWG, and other research such as Mozilla's WebAPI, BONDI, WAC, Webinos, webOS, Tizen and the like."
http://phonegap.com/2012/05/09/phonegap-beliefs-goals-and-ph...
> The ultimate purpose of PhoneGap is to cease to exist.