Oh I hear you and agree with all the points you're making here. I'd love it if Dtube, Dlive and Steemit become the next generations's standard.

That said, a lot of people still use Google Search, so it's not a bad idea to just optimize your articles, so they are displayed in the results. Besides, I think all these search engines use somewhat similar algorithms, except that Google really focuses on 'personalized' results. Meaning that they'll get information about you through your search history, Gmail etc. and adjust their search results accordingly.

DuckDuckGo is also a pretty good alternative to Google btw :)