This type of 'update' is one reason I tend to stay away from so-called 'smart' devices. If part of the product I've paid for is software, and the company can update it without customer consent at any time, then I can't rely on the product's features. Period. I experienced this myself on the PS4 version of Terraria. I bought a hard-copy of the game. I mastered the controls, and loved them. Terraria was updated one day…
I think this is a problem which should have a mostly technical solution: If most software was updated as today and users could rollback at will, most problems would be solved. That's a better way than making updates illegal.