When fully capable adults do stupid things, like voting for an man with as many very serious faults as Trump, I blame them for doing it. That Democrats were ineffective at convincing people (or inspiring them) not to do something stupid doesn’t make the thing any less stupid to do. Inspiration is not required to avoid being idiot.
Social media is where most of the blatantly false propaganda lives. Getting all of your news from it makes you more susceptible to propaganda, not less. These are people who have nothing to form an opinion with except for what the loudest people around them are complaining about most. And propagandists are the loudest ones, complaining about made up bullshit.