Do a simple test: search twitter for HTML5. Check out the negative tweets. For example a recent tweet is:
the wave is huge, I don't see it changing, devs will code to WebKit and hit huge majority, easier than supporting "HTML5" whatever that is
Now look at this Bill Reiss profile: "Senior Consultant at AgileThought, Silverlight MVP, indie game developer of Popper 2 and Wipeout games for Windows Phone and soon for Windows 8"
A few notes:
- As time goes by, you see fewer negative tweets about HTML5
- You might argue this is anecdotal, but I find that high percentage of HTML5 FUDders are like this