I wouldn't call them very good traders if they act so.....
It's funny, I PM and chat with some trading friends, and many of them are just aghast when I sell into strength on a hot running stock, they think it's crazy because it's going higher, and many times it does, for a while, then an hour later when it crashes and they are frantically dumping at a lower price then I sold at they will curse the MM's, the shorts, and whoever else...lol.