Is there a name for the inverse of the impostor syndrome?
I have on occasion felt the same myself (sometimes still do), and know of many disillusioned PhD students who felt exactly like that. There are dark moments in the night, when you are wondering whether funding for CS will be cut down entirely eventually, when funding agencies also get to the conclusion that CS is one big science of imposters.

However, what you need to realize is that this is in fact impostor syndrome - only that you are not comparing yourself to your peers, but rather you and your peers to e.g., other sciences. However, the reason why it happens are the same: you have unrealistically high expectations of the research community, which it cannot possibly live up to in reality. You know the shortcomings of your community all too well, but do not have enough insight to see that other research communities or professions are also far from perfect. Yes, all the crap you mention happens on occasion, but guess what? We are all human, so it is simply unrealistic to assume that every professor will always be a good manager (or even a decent human being), that every dean will always still be an active and good researcher, or that every paper is always published with the most noble intentions.

I should also mention that your conclusion that, if you are not alone in this feeling, you surely need to be right, is fundamentally flawed. History has shown all over again that many people can be wrong in the same way at the same time.

Edit:

By the way, I think your question title is wrong. The opposite of the impostor syndrome is, as you say, more or less the Dunning–Kruger effect. What you are referring to is not the opposite.