But when it is used they'll have telemetry on errors that occur during the restore process. So hopefully the next person doesn't have to deal with the same issues that the first did.
In other words, just because a feature is used rarely doesn't mean it isn't important to keep around. So much of what's wrong with software these days can be attributed to this "A/B test everything, the data never lies" approach to design.
Design by focus group where the focus group is the users who left telemetry on/unblocked.