Yeah, what a dumb comment. Looks like he removed it.
I've gone to the Route 66 Nationals in Joliet, Illinois almost every time since they started going there and I've been the US Nationals in Indy twice and I've only see one mild accident that I recall (Ron Kircher putting his Pro Stocker on the roof at the 06 US Nationals). People who's only experience with drag racing is YouTube videos of Top Fuel and Funny Cars exploding and wrecking probably thinks its a demotion derby at 300mph when really wrecks like that are rare.