I've noticed the same. When I go looking for some video on youtube, I first pause, prepare my query in my mind and then open youtube & rush to type what I prepared, sift quickly and try to find what I'm looking for, then close the tab/quit the app when I'm done. It's the same feeling as dashing into a hostile store trying to upsell you on stuff and waste your time, when all you needed is 1 thing.

For actual video hosting, assuming ad revenue is not desired, Vimeo seems pretty good.