There is a significantly easier option (although still more work than just buying a vacuum and using it as the manufacturer intended): get one of the Valetudo supported vacuums[0]. This firmware replacement blocks telemetry and allows for near complete feature parity with the original firmware, and flashing is (usually) relatively simple. Certainly much simpler than the process described here.

[0] https://valetudo.cloud/pages/general/supported-robots.html