"Stochastic parrot" is a deepity, an ambiguous phrase that blends a defensible but trivial meaning with a more profound but false meaning.

It's true, and trivial, that all next word predictors are stochastic and are designed to generate output based on information from their training data.

The claim that this generation merely "parrots" the training data is more significant, but obviously false if you interact with these models at all.