Well, you don’t have to wonder. I never have that’s for sure.
Mainly because I’m not stupid enough to buy one of his books
But seeing as you brought it up, why don’t they sue him ?It might be the case that he’s correct in his claims. People in the public eye generally sue others for far less severe allegations.
Seeing as you’ve probably never read one of his books (tinternet or a library can allow you to read any for free btw), basically you literally don’t know what you’re talking about when it comes to what Icke has to say.
This might help you a bit, from 2012