When Stila had counters, I've seen men working there. I've seen many races at other counters, too. One of the main people I see at my Benefit counter is black.
The reasons you listed, IMO, are silly ones for people to dislike MAC. However, it's perfectly valid not to like a company. Some people prefer a much more natural look (Bobbi Brown), some people have gripes with the company itself or rather, Estee Lauder; the last point is discussed more in the boycott MAC threads, and I'd say those who are partaking in it are making excellent points.
For me, MAC isn't the end all, be all of make up. I like some products, but some I'm not that into. The foundation broke me out completely, and my skin is normal. I prefer variety in the cosmetics I use. Every company has its strengths and weaknesses.