I don't get why people say this. It's half the fun of F1, no we aren't experts and it's all speculation. But it's interesting and fun. Following the tech of F1 is a massive part of the sport. As its not an out and out racing series.
Yeah, but there's acknowledging that you're speculating, and then there's questioning the credentials of a bloke who has been directly involved in the sport for years because you think you know better (not you directly of course, the royal you).
The idea that we can see the changes that the F1 cars have gone through in the last ten years, and that Gary Anderson must at the same time be completely unaware of, is faintly ridiculous. As is the idea that between then and getting the job now, he didn't once pay any attention to the sport, or the changes within it.
I mean, people think Brundle is a great commentator because he knows his stuff, yet he hasn't raced in 15 years.