I think the major issues around this are NHRA's secrecy of information regarding the circumstances and the cause of death that is supposedly not being released. Also, there are the mandates that NHRA imposes in regards to teams having to run a certain tire in competition. They had a tire that was perfectly fine, then they switched and had trouble, then they switched and had more trouble, then they came up with the tires in question and had even bigger problems.
Even with the tire chunking, and the issues that mandated teams use those particular tires, I don't see the need for a lawsuit. If the teams would have sacked up and just went on strike until something was done, I can almost guarantee a magical cure would have been found to the chunking problem in a race or two. I don't think I've ever seen NHRA holding anyone's hand or forcing any driver to strap themselves into a 330MPH time bomb.
I think if I had made a run or two on tires, and saw that half the sidewall was gone after a run, I'd probably think twice about getting back into it. Sorry, I'd give my left one to drive a fuel car, but I love my wife and kids too much to put them through that. Especially when nearly every other Top Fuel team was having the exact same problem.