There are a few different implementations of SPDY, and a clear use case where it applies. Also, it's a clear standard, made for being used.
What's happening here is that there is a group of very active people that create most of the software we use on the web, and have a use case they want to support. At the same time, there are lots and lots of people that are not as active, with a huge amount of use cases that will be hindered, but since they are not active, they have very little voice.