You're objectively wrong. Game design is not just about math. Nomenclature and description are important parts of design and math does not touch them.
I tend to agree. I think that happens because fo the large amount of homebrewers in these forums. It seems people can't accept that professional game designers have any clue about what they are doing, even if what they are doing is testing the waters on a 2 year long design process.
If you would criticize any homebrew in these forums the way people criticize professional games... let's just say you wouldn't be able to post for long.