I have now seen multiple articles about this and none of them talked about how much use it was actually getting today, which I have found disappointing.
Not sure why none that I have seen have been any better.
Disclosure would likely sooner or later compare actual users to people paying for the service, and while a discrepancy of orders of magnitude more of the latter probably wasn't illegal (unless some enterprising AG decides to make it a crime) it would be very bad press. No point in risking that when they can just stay mum.