This is why we badly need right to repair legislation, and forcing companies to provide schematics and service manuals. Sadly I doubt that will happen. I do hope that when we are forced to buy all this smart crap because of no other options, that at very least the base components like the motors, compressors etc are still "dumb" ex: just a bunch of coils with wires accessible, and not something with potted electronics that will only turn on if it gets a special signal. That way it should be trivial to bypass all the smart crap and put in your own electronics.
Was talking with someone today and the great reset got brought up , and they said it already started, and when you think about it, it makes sense. All this smart stuff is the beginning. When your items remove control or spy on you or only work with an account tied to the cloud - ex your phone, you don't really own it anymore, it owns you. It's the very start of the utopia the powers that be are going for. They will eventually make everything not only smart, but also subscription based. There are already companies trying to push that with washer and dryers where you're basically renting it and it's internet connected and will stop working if you don't pay the subscription fee. You will own nothing and be happy.