All you are saying is that we get what we want - echo chamber or through related advertising. To blame Facebook or YouTube is merely an example of our predilection to deflect from our lack of responsibility and informed critical thinking.
A quibble: A theocracy is "religious" - uncritical acceptance of some "revealed" belief system devoid of scientific proof. A technocracy is a system based on STEM logic. As for traditional news sources - certainly the popular print media have an agenda - mostly driven by ignorance. A challenge to beliefs and values ? How about my beliefs and values  tortured by reading the usual scribbler profundications .
PS - I get my "news" trough professional publications and/or texts, very little through the "media" - or Facebook, Twitter, YouTube - the usual suspects .....