Forget the technology war...
It's about using the right tools for the job. The most significant sentences in this article are:
"I don't want to cater to one hardware or one software platform one way to another, and Flash eliminates iPhone users."
"Simhambhatla's stance on Flash reflects a philosophy about picking the right technology for the job and not going with a brand for the sake of it."
Why is it that we humans always look for a single tool to do every job. wimax isn't going to be an 802.11" killer", Android is not going to be an iPhone "killer", etc. These technologies can peacefully co-exist, just as Flash, HTML5, Rails, and countless others.
Bad uses of Flash:
Entire sites - the user cannot bookmark the page to properly cite the source of a quote or pass along something noteworthy.
Good uses of Flash:
Animation that actually adds value to the site.
Obviously that list in not comprehensive so don't nitpick it.
If you don't want to learn multiple technologies, that's your choice. Just don't make the rest of the world suffer because you are lazy. Or, specialize but work with other specialists to produce a product of superior quality because you've chosen the best of the best.
Using the right tool for the job is the difference between "getting by" and "making it happen".