While agree with you to some extent, do you think propagandists have somewhat recently realized how to exploit current communications tech to deploy their message(s)? If the financials of FB and GOOG tell us anything, it's that advertising on the internet is very effective, and advertising is just corporate propaganda. Most people just don't have the time/interest/energy to fact check, and many are just out to confirm their preconceived ideas/ whatever helps assuage their sense of guilt.