I agree Meghan, very disappointing. At least we know the truth now. There goes my claim to clans Chattan, Leslie and Mac Phearson lol!
It's nice that these "clans" can help with genealogy, though, if they have the resources to do so.
I understand there is no longer such a thing as coat of arms, unless you are an official member of a royal family with a title. All those you find online are often made up from what I hear, and there could be multiple images for the same surname.