MA are all about controlled and focused aggression.
One can quite easily head down a road that leads to violence as a way of life.
TMA tend to offset this issue in various ways:
Some don't advocate fighting at all, hence it becomes a non-issue.
Those that are "combat oriented" tend to try to instill a sense of responsibility in their practioners. This can have mixed results.
Sport combat systems tend to rely on the inescaple fact that, no mater how good you are there is someone better, to keep their practioenrs humble, this too has mix results.
Personally?
I have had issues with this and certain TMA training tends to "bring out the demon" at times.
For myself I found myself "losing" the "civility" needed to be a "gentlemen and a warrior.
I took awhile to get it back, but got it.
There are many different paths, one must choose the one that is best for THEM.
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !