Christoph the Magus said:
Speaking for myself, I won't buy anything that has your name on it. Doesn't mean that I don't have some things that you collaborated on because I'm not anal enough to check the credits (maybe I should start), but anything with your name on the cover gets dropped back on the shelf ASAP.
You are, I suggest, cutting off your nose to spite your face.
My first impression of GMSkarka from these message boards is unprintable. Then, purely by accident, I ran across a product he worked on - Skull and Bones. My first reaction was similar to yours. My second reaction was, "Let's see if this so-and-so can walk the walk." Turns out Skulls and Bones is outstanding, with IMO the best naval rules for d20 bar none. I bought it, GMSkarka or no. Being then more familiar with GMSkarka, I then noted more readily when he would post or publish something. I do read the credits. Funny thing happened. His work continued to impress, in the next instance with support for Northern Crown as well as Skull & Bones.
Just because someone may be _really_ offputting at first encounter, does not mean their designs can't make a seriously good contribution to your game. What are you after? A good game or a pen pal?
And as it happens, since first encountering GMSkarka's postings, I have seen him post opinions that I _do_ entirely agree with, as well as ones I do _not_ agree with. Turns out he is not the bogeyman, even if he can do a real good impression of one if he feels moved to it.
I suggest you give GMSkarka's work a chance, irrespective of authorship or publisher. I think you will find a good game therein at least as often as not, even if you don't decide you want the man as your pen pal.
When I see GMSkarka's name attached to a post or a game I know this - it is worth a look. It may infuriate. It may fascinate. It will not be boring. I ask for nothing more from anyone. YMMV, of course.