IMO a company should lose all control over technology once you've purchased it. Doesn't matter if it's "smart" or not. If the company wants to do something like telemetry, they can buy a license from you for that data. See how they like it when the tables are flipped.
Can't you trivially reframe the initial purchase as being subsidized by that license? Your $200 smart knife sharpener would be $300 if it weren't recording audio 24/7 (for VAD, surely!) I don't like it either but here we are
If you're buying a service and not a product, then the consumer has a right to know!