I'm not sure you understand what the previous commenter was suggesting. They're saying the receiver of an `age` message could, in theory, skip authenticating the ciphertext. They would have to do so deliberately (so deliberately that the code to do it doesn't exist), and the entire point of doing so would be to defeat message security in an attempt to do data recovery.
I think you should probably dig into the age code before writing posts about why PGP is better than age. The question of whether adversaries can modify age messages in transit is a pretty basic one.
