That's some wishful thinking. If it's dead, how is it that most video sites insist on using it? Where is the support on - forget all browsers, just the big four - for a common real time streaming protocol in HTML5?
From what I can figure out, the only major video site that's switched to HTML5 - and THEN only for most, not all, videos, is YouTube (and some clones of YouTube.) Hulu, Amazon, et al, are still using Flash. Support for iDevices and Android isn't via HTML5, it's via specialized apps, essentially going from a generic cross platform proprietary system to per-platform super-proprietary systems.
Flash isn't dead. It's old, and wants to retire, and everyone wants it to retire, but it's the only one in the office who knows how to manage the creaky old systems we still use, and HTML5 is the new hire we refuse to send on courses to learn "real time streaming" and other things Flash does all the time.
Pretending Flash is dead isn't going to kill Flash. Putting pressure on Mozilla, Microsoft, Google, and Apple to include HLS (and other standardized streaming formats) in their browsers will help, as will demanding the browsers cooperate on a DRM system that isn't the current "Attractive to content providers, terrible for everyone else" crapfest.