how to force HTML5 video?

hey,

I did a clean install of Yosemite on my mid-2010 MBP 13, and one of the supposed things that was supposed to come of Yosemite (and Safari) was HTML5 video playback.

1) I have "prefer HTML5 playback" set w/Netflix, but, it still demands me to download Silverlight.

1) I cannot find a way to play HTML5 YouTube videos, so, I had to get Flash 😠

I haven't gone into vimeo or other things yet, but, this just doesn't make sense.

If I can play non-flash YouTube videos, and don't need Silverlight for Netflix on my iOS device, then I absolutely demand I be able to do the same on my Mac!! Even my 4-year old Mac has a more powerful processor than the iOS devices that can play 1080p video!!!

Anyone know what settings I need to adjust? Is there something I'm missing in Safari, because I should be able to force the HTML5 video by now.

(Don't tell me to get Chrome, I despise google, they MADE me a google plus account just to sign in and manage my youtube playlists. Now they have another count for their social network, which I do not use at all.)

I don't use this support site, much, but trying to get someone from apple to read this.

thanks!