If you’re unfamiliar with Plato’s Allegory Of The Cave, you should familiarize yourself.
This shower thought is older than showers!
Plato’s allegory of the cave is not about what this shower thought it about.
…
Yes it absolutely is.
I am sorry you are failing to connect these painfully adjacent dots.
The allegory of the cave is about people who are under an illusion and reject evidence to the contrary. Hence why it has “allegory” in the name, you know. I can’t really do anything about being told my brain gets no light and no one’s proposing we kill the person who said it, and the point isn’t that we shouldn’t kill them, so it’s not really anywhere near the same.