If by hustler you mean a player that misrepresent his speed, uses dirty trics etc to cheat low level players out of their hard earned cash, then my opinion is that they are SCUM. In my moral hierachy they rank barely above a pick pocket, only for the reason that you can avoid the hustler more easily. If you mean higher level players playing other players of comparable ability and trying to get ahead, negotiating spots etc- then I'm fairly indifferent. Robbing some stupid banger of his entire paycheck by suckering him into a crooked game is different from matching up with a fellow player who is equally knowledgable, especially if there is ridicule and intimidation involved. If the other player has some knowledge and is looking for action, then by all means: Go right ahead.
Just because someone may be skilled, and their exploits may be interesting to read about, it does not mean that they by definition are stellar human beings. Would you want such a person for a friend? How do you know he or she is not working some kind of long con on you? You also read about hustlers of the sleazy kind working other kinds of cons and rackets, like: Coin forging (read on Az), stealing from Car wash machines (read on Az), etc. Not the best kind of person to be hanging around IMHO, but of course opinions may vary. If you like to defend your friend who engages in this kind of behavior from the righteous anger of his or her victims, then be my guest, not my cup of tea though. I mean, I'm happy do defend any of my friends if they make a mistake, anyone can be tempted in the right circumstances and with the right kind of pressure and distress to do something they would not ordinarily do. I'd be hard pressed to defend them if they are found in a car with coins from dozens of vending machine robberies together with professional grade equipment for the job, however. It's a bit harder to explain how that kind of thing is "out of character". Also defending them would also involve a sincere effort on their part to make things right with their victim(s) and fans (if any), but that doesn't seem to be a priority in these cases..I wonder why?