I’ve never watched doctor who before but now you have me interested can I watch the episode without having to watch the entire season? Sounds super interesting

I think a lot of black mirror episodes also pull from this idea though but in smaller ways

So what happens in the end? Are they like mindless zombies?

I think it’s tough because for some it might be a way to give them back a quality of life like eye sight and all that but if it become a vanity thing or cosmetic enhancement I would be against it