Yes, I've heard the same data. It's about 60% to 70% of the population.
The only way, in my opinion, to get that going is to give trust to users, that they have their own data and they are in control of it. Nothing goes to the cloud to get anonymized post. Everything is basically managed on the edge device, calculated on the edge device, and it's in their control.
That's the whole architecture we've been following, to basically inhibit the data even going to the cloud. Everything is getting processed and calculated on the device, and it's across device, across operating system, across network and cloud.