You are probably right, but how cool would it be if we are wrong.
Also, any evidence of life that may have been existed on Mars previously would be erased.
I assume you have read the Kim Stanley Robinson trilogy. When I read it, as a teenager, I was definitely a Green-Mars proponent, but as I grew up learnt more about palaeontology and geology, I became more of a Red-Mars proponent.
That was what I was going to say.
That said, if someone detects some sort of data-mining plagiarism bot sucking down everything on an instance, it can be defederated very quickly.