And what if the manufacturers decide to sue you for disabling the screen? Or decide to simply disable your fridge? This isn't a far out scenario either, the whole right-to-repair movement was based on a company not allowing you to do things with the tractor you bought.
I've long wondered what would happen if, say, NYT sued me for blocking their many ads (despite being a paying subscriber). My argument would be that I'd never click on the ads anyway out of principle, so the ad blocker is just me delegating the ignoring of ads that I would've done myself regardless. Also that if I couldn't turn off ads, I wouldn't have subscribed and they'd make even less revenue.
That said, I doubt these companies would sue because of the risk of setting a precedent in favor of the consumer. Scary legal letters (e.g. cease & desist letters) perhaps. But given enough customers, at least one will have the resources to hire a good lawyer and fight it all the way to court.
If a company intentionally spoiled my food out of spite I would sue them. If they did it to all of their customers that becomes class action. They cannot force their customers into a contract which would include allowing them to spoil your food out of spite, that contract would not be legally binding.
It would be with merit, because it would be part of the contract you signed when you bought the damn thing. We already live in a world where any attempt to bypass DRM on things you've bought is tantamount to a potential legal battle if they really wanted to be assholes about it. Where you don't really own the things you buy.
Drm is one thing, taping construction paper over a screen is another. That contract would be unenforceable. Shit is dystopian lately, but you're being hyperbolic.