It's a figure of speech. "I don't care for," means, "I don't like," but it signifies a smaller level of dislike than simply saying, "I don't like." It's my fault for using figures of speech on an international forum.
As for the pillars, it's not a major problem. I only noticed because I was looking at it critically. My first impression was, "This looks good!" I think Arcturus made the pillars wrong. They shouldn't have that black outline indicating contact layer. Maybe that's what he intended as a tileset designer, but from a level designer's perspective it makes them hard to use well. The way you're using them shows that they are in arguably in the background, which is a good thing. If you like it then you should leave it.