Google's decision to kill SPDY in Chrome will go unnoticed by most users.
Which is as it should be
Both the web browser and the server must support the protocol for it to have any effect, and few web servers enabled it – Google being a notable exception, naturally.
Quite a lot of high-traffic sites use SPDY and credit to Google for doing enough work to get a serious debate about HTTP2 which hadn't been going anywhere.
Google's work on open source and within standards bodies is generally pretty good and in stark contrast to Apple or how Microsoft used to work.