I'm wondering if it has something to do with the IRS that many of these cars are sporting these days? I had a 2000 BMW M5 and it could be a real handful with the traction control turned off. The solid rear axle cars I've owned have never been that jumpy. The back end may swing on my Cuda, but it seems like it is slow enough that there is plenty of time to react without panic. The IRS cars seem to really snap. Maybe exacerbated by the tiny sidewalls on the tires?
You may have something there. The quote-unquote "great handling " almost stock cars that I have seen drive into walls at the dragstrip were irs cars, camaros, a corvette or two, and a couple GTO's. Substantial power, substandard (drag) tires.