I'm sorry, but what's offensive here is making people watch those abominations, and possibly continuing to draw more (I hope not).
I can't explain why water is wet but I guess some scientist in the field could give you a reasonable explanation; I just know it is and it's not like I can discuss about that: it just is.
Here's the same, any person with an even remote sense of beauty would instantly recognise those works as hideous; I can't explain why they are ugly because I'm not in that field, you have to ask someone who is to get a better explanation - still, I know they just are.

I'm sorry we can't understand each other, and I'm frankly worried some people fail to be horrified by those pictures.