People tend to judge or highlight things they approve of by pointing at its best aspects.
Things that they already dont like, by pointing at its negatives or percieved negatives.
Thats basic fast and slow thinking, we generate a feeling about something then rationalise reasons to support that.
A further issue here is when things that are different, if we are going by how they look we are getting less than the whole picture, if something is different, why would we assume it looks the same.
Additonally in our subject we have to be mindful of Gray Cooks saying, the language of movement is feel.
If we want to understand something we need to feel it, though being on the recieving end of it or by applying it.
The up shot, dont judge a books contents by how the cover looks... but by how the words make you