No, I'm used to 1em being a reasonable size for body text - the text at that link says as much, but for some reason sets its own body text to 1.3 times browser

No, I'm used to 1em being a reasonable size for body text - the text at that link says as much, but for some reason sets its own body text to 1.3 times browser default. I don't particularly object to it, I'm just curious as to why they think the browser default is too small.