We don't keep much data around for a CDR, just who called, what time, and what happened to it. Even my number hasn't generated more than 1K of data thus far. I don't see that being a big problem for 10 years of someone's line data.
We can change the wording on that, but there is a requirement for when a number is active or not and who it is attached to, and there's some significant liability if we can't say where a number was supposed to be going at some point in the past. We want to acknowledge that requirement so everybody knows what's happening and why. I understand completely if that's a turn off, but do realize that anyone who has a phone number has such records kept around for several years. My approach is that telco stuff is not something I want to be unprofessional about, and I don't want to hide that either.
Knowing that philosophy, I'm open to suggestions for restating that particular phrase. I suppose it's also worth expanding what "provisioned" means here (specifically it means we put a line on an account with this ID at this time, not a function of identifying WHO owns a number at a time).
You might also note that we don't ask who you are. We don't care. Stripe (payment processor) does, but our system honestly has no idea. If that changes, so will our policies to reflect exactly that, and why.