How would you feel about a blog that openly criticizes workplace clothing (I bring this up as lots of people in my office wear things like toe shoes and some males even where quilts)?
I try and be accepting of other people's personal tastes and don't want to enforce through rules/laws/social pressure some common clothing standard that people have to conform to. Same goes for houses in that I don't like publicly mocking them for how they look in order to socially pressure people to build their houses so that they conform to some standard.
*edit: obviously this shouldn't be taken to the extreme as houses do emit externalities on those that surround them which can decrease the value of the surrounding houses. Thus, I think some conformity in a town by town basis is good. However, I find blogs like this and some home owners associations (HOA) to be ridiculous with how far they try and enforce their rules and opinions on how homes/town should look.
So yes, her opinion has more value because it's backed up by proven design rules. It's not as subjective as you're implying.