“ They could find criticisms of Trump, But they never really try. Instead they go over the top.”
It’s called hyperbole: exaggeration for effect. Their overreaction and the transference of their own beliefs to Trump is part of the continuing effort to marginalize Trump. They accuse him of incessantly lying, but never offer examples or proof. They issue warnings on what he will do if elected, but it’s what they are actually doing right now.
I think that level of exaggeration doesn’t/didn’t help. If they could stick to certain things, they could be more effective, IMHO.