EDIT: I see now that he's talking about historical beer styles, not process stuff. So I digress in the second half of this:
Mosher is awesome. He's really right, you know. There's a bazillion myths out there that just never die. And I know he does, like, a TON of research. He's read all the old history books and spent a lot of time at libraries, or something. The rest of us haven't. Mosher, of anyone, would know the truth. I have no doubts. Ron Pattinson, also!
And then there's the process myths, of course, which Marshall Schott, Denny Conn, and others have been working so hard to dispel. How I brew today compared to how I brewed 10 years ago is.... reasonably different, based on what I've learned. It's got to be super friggin confusing for brand new homebrewers to try to make sense of anything, when they are handed a copy of Papazian or Palmer as the "bibles", but then they come on forums like this one or join a club, and everyone tells them "oh no, that's all wrong, everything you know is wrong". It's crazy how much this hobby is growing right now. Ten years ago, or 20 or 30..... so many friggin myths have been generated in recent history that just might never die because books last forever. It's going to be a friggin mess 100 or 200 years from now when someone tries to figure out what was known and learned during the American homebrew renaissance of the 1990s and 2000s, because man..... we've totally flip-flopped the common knowledge probably 100 times on 100 different topics. It's a mess!!