It's not as bad as you make it out to be. D: When I was 10 I barely noticed that there was a murder, all I saw was a scary ghost and I wanted to "kill" it. Playing FireRed again, when I was 15, I realized it then. The kids will notice it when they get older and think "OH GOD". But when they're carefree and young and just want to get on with the battle with the big bad Black/White Kyurem, they'll mash that A-button.