Even if all the scholars think it wasn’t literal doesn’t mean he didn’t mean it literally, that could just be how we have been interpreting it
Plato wasn’t writing in some long-dead obscure language that we only have vague translations of, it was Greek. It’s not a matter of interpretation.
You can’t even intrepret my English correctly, how can we assume we know what was going through some dudes head several thousand years ago?? Also I’d like to see where Plato wrote “I made it all up about Atlantis” cause AFAIK we just assumed this is the case