Huh. I feel like I'm back in 2004 right now.
It is my opinion that exposure wins, every single time, especially these days. Whatever editing Nicktoons had to do was trivial. DBZ remains a violent show and the degree of blood being shown, quite frankly, has minimal connection to artistic integrity. DBZ Kai itself cut back on the original show's violent content a bit on Japanese television.
Edits were (past tense) a significant problem when they insulted the viewer's intelligence and/or transparently altered things in some misguided attempt to coddle kids. That era is long over, and unedited anime is more widespread and available than ever. More power to Nicktoons, and I wish they'd carry even more anime beyond this.
Cartoon Network should NEVER have let the property get away at all, but oh well.
I would suggest that it's not the medium, but the quality of perception and expression, that determines the significance of art. But what would a cartoonist know? -Bill Watterson