Ive been training for 40 + years. I have rarely ever used hand wraps. I have never had a wrist injury and have only had a few broken digits from bare knuckle sparring. My secret: 1. Learn to make a proper fist. By that I mean a "karate" fist that is intended to actually strike an object without injuring the striker. and 2. learn proper technigue. Spend months striking "air" before transitioning to striking objects. Progress to a striking a makiwara post gently with excellent form, and progress slowly over the course of the next few years. Suppliment the makiwara striking with less than full power strikes to a VARIETY of bags and mits. DONT do all of your striking full power on a heavy bag.
This system is tried and true and has been implemented for hundreds of years. It works.
1. So the guy should spend MONTHS (Half a year? a whole year?) striking air instead of just protecting himself with gloves?? You will improve a lot faster if you actualy train for real instead of passing a year striking air...
2. I tryed to find what did you mean by ''karate fist'' and I didnt find anything... but if you think karateka knows how to punch better than boxers, you are just even dumber than I thought.
3. As someone stated before, its not because something has been used for hundreds of years that it means it is good. Conservatism is usually a very bad thing.