When CSA started, it was no different to me than when they started the "test scores standards" in schools. Teachers immediately started teaching to the test scores. Education, and the quality thereof, didn't matter. The only thing that mattered was those test scores. CSA is the same thing.
As for the driver shortage myth, it's not really a myth. Between insurance companies and CSA scores, there is a driver shortage out there. Carriers are being prompted to hire only drivers with unblemished records. Not so much in expediting (although the Panther van driver turnover rate is astounding) but it is in general trucking, TL and LTL. They key is the drivers have to be qualified, and the qualifications these days remove a significant percentage of drivers from consideration.
As for driver pay, that's actually up about 5% this year over last year, to between $45,000 and $50,000 a year. Line haul rates are up 2-5% this year over last. But the driver shortage has resulted in about 10% of TL and LTL loads being 1-2 days late. But these are not numbers for the expedited sector, these are overall numbers for trucking.