Because there's nobody around to stand up as a paragon of virtues.
It's hard to give the time of your day to the criticism about Trump, when it is coming from a bunch of paparazzis, con artists, comedians, and other sorts of individuals, whose credibility is next to none.
They just don't want their game to be played by somebody else, that's all they're frustrated by. That there's a bigger and better bullshitter than they are.
If you had a man around, to stand up for honesty in politics, yeah sure. But nobody is doing that.
I mean, how many times is it now that some average con-man has been made out to be the guy that "takes down Trump"? Am I supposed to take the news outlets seriously after they put up some people like Avenatti, Stormy Daniels and Michael Wolff, as their version of a truth teller? Porn stars, sleazebag lawyers and Hollywood gossip writers?
You want to cut down on Trump's bullshit? Start the process by cutting down on your own. Once you are someone that people can believe in to tell the truth, then maybe people will start paying heed to your criticisms.