The developer is rude, I agree. That's why I've stopped using his software. There is little support for the majority of his products, which isn't what software development is about. If you didn't want to be contacted about issues, then don't put a feedback link in your applications or any form of contact.
Inquisitor is sort of pointless anyway. I find better (more relevant) results using Google directly as the queries and algorithms used aren't exactly the same. For me, it's useless.