Only 0.5% of the PA workforce is employed by the natural gas sector. Yes, there are some other auxiliary industries that benefit from natural gas activity that aren’t counted in that. Yes, low gas prices support some additional economic activity than under a high gas prices scenario.
But you’d have to be smoking crack to believe that a 5% severance tax on gas drilling will “cripple” PA’s economy. It’s just not that significant a part of our economy.