Not everyone is as critical-thinking as you. I've catched myself many times thinking that someone is right just to change my opinion entirely after hearing counerarguments, but I agree with you that it looks like authoritarian governments are typically not able to employ really creative and critical thinking people as their propagandists.
RT is different than one of the cringe individual spokespeople on Twitter. RT are stoking the internal culture wars and there are a lot of people who watch RT in earnest.
But hey I live in a country where 55% of the population are self declared atheists. We all live in a bubble.