Just taking dirt off of a surface is not impressive to me.
I'm not saying that I don't like the photo-writeups, but I do think it's a little much to show four or five pictures with a little narrative like "here's the dirty wheel....here's the wheel soaked with an aggressive chemical cleaner.....here's me agitating it with a brush.....here's the wheel after it's rinsed off....voila!"
Enhancing gloss, shine, and reflections takes some degree of skill. Any kind of serious paint correction certainly takes a lot of work and is worthy of some praise. Before/After shots that show the work involved are interesting to look at sometimes as well.
But as I said, what I really like to see in the write-ups is the finished product, presented in a stunning way. Pictures that make me say "wow, that's a sharp ride" even when it's a car I'm not that into.
When you can say "wow, that ten year old Grand Prix looks friggen sweet!!", you've really accomplished something.