No, it's not just you. I also think that a majority of MMA fighters have bad footwork. If they actually DID really circle away from their opponent's power hand, which you mention, then it already would be quite an improvement for a lot of them. Most of them are flatfooted and only know forward and backward movement. Probably it's because they didn't learn the basics from start on and later when you already have a certain fighting style, it's very hard to learn good footwork, because under pressure you tend to get back to what you know best.