>That kind of code is not fine.

Depends on your definition of fine. Is it less readable because it's doing the straight forward thing several times instead of wrapping it into a loop or a method, or is it more readable because of that.

Is it not fine because it's slower, or does it all just compile down to the same thing anyway?

Or is it not fine because you actually should be doing different things for the different properties but assumed you don't because you let the AI do the thinking for you?