Why do people keep talking about Corbell, Knapp, and Kirkpatrick?

I am always amazed by how Corbell can speak a bunch of stuff and yet you will learn literally nothing new at the same time when listening to the things he say. I have never once found him to be a reliable source of any information regarding ufo topics.

Also Kirkpatrick isn’t pretty much confirmed a disinformation agent already? Why we keep posting about them. Its starting to remind me of the fake mexico aliens all over again