I’d bet lobby groups from the so-called “high risk” industries (e.g. porn, guns) somehow put the screws to them after all the outcry from Operation Chokepoint. The sad part is, if they had expanded the guidance rather than contracting it, they may have a better defense for the reason why they identify those industries as high risk.
Now anyone with a TPPP will have to make sure they keep a few backup copies of the old guidance, because I guarantee the Field Examiners will still be looking at it. As usual, BSA gets more difficult than before.