I believe the reason why people are not liking it is because of how most of them are shaded.
The shading on some of sprites is too little ex:
while shading on others can be a little overwhelming ex:
I actually think Temmie made a few errors in his critiques. The latter example he provided was too light on shading, thus making it look under shaded and more solid. The first was the overwhelming, not the second. Perhaps he reversed the image links?
Anyways, I find either reason to have nothing to do with likes. There was a lot of perfectly good content, and it is my policy that if you like any part of the content you should drop a like. Just to be encouraging of content creation.