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You could use them to replace everything with messages like in They Live https://m.youtube.com/watch?v=yjw_DuNkOUw

No in They Live the messages were already there but they were conditioned not to notice them consciously without the glasses.

Funnily enough, a few months ago, inspired by They Live (and by a Simpsons episode) I tried to do exactly that as a POC: block real life billboards

Ideally, one would use something like this on an AR headset/smart glasses and block unwanted stuff from their view