Natural propensity to suppress ones conscience might help in that regard... Thankfully most don't have that
You don't become an elite level fighter without knowing the game inside out, dirty tricks as well. It's the fight game not kiss tag. All of the best-used plenty of dirty tactics
Every single elite fighter I've ever watched knows exactly how to bend the rules the just a little bit.
Intentionally dirty boxers are cowards. Can’t beat their opponent by the rules so they have to cheat. I’ll never cheer for a cheater. Accidents happen and sometimes guys respond to dirty tactics by returning the favor but I hate intentionally dirty boxers.