That's total horse shit.
PPP was not about government efficiency not has it improved efficiency. PPP was about trading a short immediate cost (infrastructure build) against a long one (rent). It was a cash flow measure to knock as much deficit on the head up front and reduce unemployment. This was purely a political measure for the government to "not look as shit".
Of course in the long term it's a shitty deal for citizens, lots of political cash back-handers were taken and we've now got long-term rents to pay and stuck with low grade contract outfits.
But that's what happens when you put capitalism and socialism in the same pot and stir it.