Regardless of you think of him and his 'dumb' ideas, with 1.4 million subscribers he will probably inspire more people than work at your 'small space company' to become real rocket scientists themselves. I wouldn't be surprised if he does more for the future of space industry than most of those who currently work in it individually do.

With that said, if you find him irritating, then you find him irritating. Hard to argue with that.