Simply by the questions you ask, the way you ask them, they are able to infer a lot of information. Just because you’re not giving them the raw data about you doesn’t mean they are not able to get at least some of it. They’ve gotten pretty good at that.
I’ll be the first to admit that I fell for his (initially) near perfect PR that crafted the industry genius image he’s still coasting on to this day. Of course that took a nosedive when he started calling a rescuer “pedo” for pointing out the stupidity of his rescue submarine idea. But it wasn’t until he started talking about IT that I finally started to understand he wasn’t an average CEO manipulating public opinion to his advantage, but an absolute moron who actually never had any idea of what he was talking about. Yes the dude is that stupid, but good PR is actually hard to completely take down.