I think so. Violence is regarded as unwholesome.
From playing their sport, boxers get cauliflower ear:
They lose teeth:
Worst of all, they have brain damage... And they are often exploited financially by their managers. In some cases, especially unregulated MMA, a person can even die from such activities. Then there is also the organized crime involved in running boxing rackets, where the matches are fixed.
The best things in life aren't things.