Did they get their credentials revoked or just hurt your feelings?

Well, Bill Nye never had the credentials to begin with, and is now a political agenda mouthpiece. Tyson and Kaku still have their credentials and use them to add validity to their stories, but their stories are just whatever is popular, whatever will get them on TV, whatever will sell a book, it will change as needed for the money. Similar to a medical doctor saying that smoking isn't bad for you, because he is getting paid a ton of money to say it.

I'll agree with you on Nye. He was more like a science teacher than a scientist. Now I'm not sure what he is. But as for the others, are you saying they intentionally present false information?

Not false information, my MD example was admittedly overboard. But it's like if theory A and theory X get published, and theory X sounds cooler to the public, but has less scientific merit, it doesn't matter. Theory X could be debunked, but there will be books and tv shows they appear in, going "Hey here is theory X, isn't this totally awesome?" It's like they just promote whatever sells. As opposed to communicating what's going on in the field of science.

What examples do you have?

Kaku appearing in a discovery channel show about the multiverse that had a lot of special effects, but very little basis in science, his book on superpowers, saying he found definitive proof that God exists, which is based on String theory, which has already been found to be incomplete. He clings to string theory as the rest of the physics community moves forward. He was one of the original proponents of string theory and as the community shifts away from it, he continues to push it. Tyson uses his credibility as a phycisist (which he has earned and deserves) to speak on political issues, and to say that to disagree is to be on denial of science. He accuses political opponents for standing in the way of democracy. Talking about how America was founded, why, and where America needs to go in the future is okay, of course, but he has said political opponents and people who disagree with him on political issues, are standing in the way of science in a way that could dismantle democracy.