I think that most of the time if a person was going to take the animal to a vet . . . they wouldn't be asking for help here.I see that as a "I don't want to advise if you can see a vet"....kind of a CYA.
I've seen so many posts bashing the person trying to help saying. ."you are not a vet" and "there are no experts here" etc.. I think it's become more of a cover your butt kind of statement.