It's neither.
I get made fun of, both here and in real life, for being such a baseball purist.
I have no problem with tough baserunning (the Buster Posey rule is for pussies), chin music, a well-timed fight, retaliation, etc.
But that dirty slide is comparable to a pitcher throwing at a batter's head. NOT part of the game. Never has been; never should be.
You can be tough without being dirty. That was dirty and it ruined a player's career.