1. The Baron has big, metaphorical balls.
Why else would he take out Sephiroth, say "Mozilla Firefox sucks", trash Random Videogame Mishaps cartoons, and mock the Hunchback of Notre Dame in a wacky way if it weren't for this. Sure there's Evil Dave, Dean Packis, and Ray Pinot; but, this site hasn't heard from ED9K and Ray in a long time and Packis aims for shock value. It takes balls (and a good ammount of thought) to make good satire without being contrived or biased; and he just does that.

2. He isn't a one joke loser.
Unlike certain other popular flash artists who fit the mold of "Here today, Gone tomorrow" (Example: Legendary Frog); Baron von Brunk doesn't stick with the same shit as the previous toon he made. He's proof that you don't need to rely on the same joke in a different cartoon.

3. Willing to Experiment.
It helps to experiment with original ideas from time to time, and one would have to look no further than Yes! It Doesn't to see what I mean.

Conclusion: Those are my reasons for why I like Baron von Brunk's cartoons, and I can't see why the rest of his fanbase disliked Quasimodo's Quasi Advice.