All players in golf have the choice as to whether or not they may anchor the putter, hence all golfers have the same advantages. If one refuses to take this advantage, it is at the player's own risk. There is no probability for injury, whether physical, social, or financial here, so its impossible to see how this is cheating, or a practice that should be regulated.
Way back on the ancient moors, golfers had a club and a ball. As more people started to play the game, it evolved. Clubs went from being made of wood to metal to graphite. Cleats were added to shoes. Someone decided to wear a glove. Now, someone has extended the shaft of his putter and used his belly to steady it. That's not cheating in my book.
Way back when, on the moors of yore where Golf was first developed, you played with a club and a ball. As more people played, better equipment was developed. Spikes were added to shoes. Someone decided to wear a glove on one hand. Then some guy extended the shaft on his putter and used his belly to steady it.
Anchored Putting isn't cheating in and of itself. Some people need the extra steadiness offered by anchoring their putter against their body. That's fine for a game between friends. The problem comes in at gulf tournaments. These are games of pure skill. They aren't meant to have skill "crutches," unless of course it is a tournament for those with a handicap. Players in the Majors need to be able to set an example for young people just starting out. If a person starts out anchoring their putter they will never be able to put without doing so.