Hmm, I mentioned in another comment that I'm not even sure how much I "believe" this premise, but for the sake of discussion let's assume I do as I find it fun to think about from time to time.
Your post sounds very condescending, but I'm interested in what sounds like a completely different take on the topic than I've seen before. I don't know anything about semiotics and had to look up what the term meant before posting. What would be your abbreviated and distilled thesis for how semiotics relates to this topic and to your first paragraph? Phrase differently, if I were to study semiotics, what part of it in particular would be the most relevant to changing my answer/ideas related to the question "am I living in a simulation"?