Compare: "Can you prove that alien explorers cannot make contact with us?"
Nobody has the tools to begin proving a negative [0] in either of those cases, and it's possible they'll eventually occur... But so what?
Just because it could happen someday does not mean it's happening now. Instead, we have decades of seeing humans excite themselves into perceiving semantics that aren't present [0], and nobody's provided a compelling reason to believe that this time things are finally different.
Nobody has the tools to begin proving a negative [0] in either of those cases, and it's possible they'll eventually occur... But so what?
Just because it could happen someday does not mean it's happening now. Instead, we have decades of seeing humans excite themselves into perceiving semantics that aren't present [0], and nobody's provided a compelling reason to believe that this time things are finally different.
[0] https://en.wikipedia.org/wiki/Burden_of_proof_(philosophy)
[1] https://en.wikipedia.org/wiki/ELIZA_effect