I am with you entirely, RD. The problems include currency (aggravated by hours limitations on some airframes) and, possibly, the percieved need to push the envelope just that bit further. Airshows are a business, after all.
It is statistically inevitable that sooner or later there will be casualties on the ground, either on or off the airfield. Then the politicians will step in with big flat feet, and that will be the end of air shows.
We need a thorough rethink now.