Certainly not!
Honestly, I don't mind the simple "I loved it!" one-liners (or the gushing, squeeing fangirl paragraphs either for that matter...). I just whish more people would take the time to make constructive comments. I actually got my first one after 4 stories with a combined total of 65 reviews - yeah!! She pointed out that I sometimes confuse than/then but that I hadn't done it in a while. I was so psyched that someone actually pointed out an error my Beta hadn't caught and actually took the time to let me know about it. WOW! How cool is that?
BTW - Am I the only one who can spot errors while reading other peoples work but not see them at all in my own? I mean, I know the difference between than & then but when I write I seem to loose that knowledge somewhere between my brain and my fingers.
I think I'm lucky as far as rating and reviews go in that I write in a popular fandom about a popular pairing. Three of my stories have 5 stars and one has 4 stars. My Lupin/Tonks one-shot only has 13 review but my Granger/Snape one-shot has 22 reviews. Of course it also has about half the number of hits as well....