While I don’t think prusa will go down this route the only way to ensure this is the case is a diy printer running open firmware like a voron, or using an older printer from before “cloud” was a thing for printers.

All it takes is prusa getting sold, guarantee whoever buys it will go down the route of telemetry bc it’s big money. Again, I don’t think that will happen (at least anytime soon) but the only way to guarantee it doesn’t is to control the hardware and firmware