I can see the marketing/branding perspective. While it does scream "DUH" if the word photography is on a photo as part of the watermark, for those with a business name that identifies what you actually do- consistency is recommended to help connect your work to your business.
Ive seen examples where "© Oscar Mayer" is not related to "Oscar Mayer Photography", It just happens to have two different people with the same name.
A similar argument can be said for why we have to put "©" before the name. But, for someone who is just a hobby photographer, marketing is not as important. In that case, just the name is good to me.
Looking at Hikin Mikes logo, the logo incorporates the word "images". Thats clear enough what he does, so adding "photography" would be redundant as a watermark.