The word simulation is not synonymous with illusion. Saying that the illusion in the Upanishads or Hinduism is the same as a simulation is a fundamental misunderstanding of what those texts were trying to convey about the nature of reality. And in Buddhism the “illusion” isn’t actually an illusion, it’s the falsehood of your own perception. These concepts sound similar on the surface but an actual study of any of these religions will reveal that they are not describing a simulation at all. As for Plato’s allegory, it is similar to the Buddhist concept, it’s most simple form being that you cannot trust your senses without the proper proof and reasoning to back them up. Plato was stressing the importance of a scientific and concrete understanding of the world instead of blind faith in what you see.

And just as you see from reading all of these, the reality of these simulation theories is that they rely on translations and falsehoods of ancient texts without the true context behind them. In Hinduism, reality is presented as an illusion because we are all part of the greatest God made to experience itself, and there really is no difference between us and any other substance. In buddhism the illusion is the falsehoods you’ve built up in your mind about the understanding of yourself and everything around you, meant to encourage self regulation and reflection so that you are not consumed by those falsehoods, and in Plato’s work it is a warning about existing outside of the pursuit of true scientific knowledge and measurement. Your theory dismisses all of these deeper readings in favor of trying to tie concepts together that could be misrepresented as the matrix.