Seems likely to be another example of LLMs replicating training corpus. My expectation is that there will be more writing showing why something is counterfeit than why something is genuine, in part because disproving that something is counterfeit from visual/physical clues alone is essentially impossible. Lack of any definitive counterfeit proof is not proof of authenticity, hence why provenance and trust as such integral market factors. For example, even if the packaging were to be identical (e.g. say it's stolen from the factory), this is still not proof that the contained product is the one advertised.

And yes, packaging mistakes with chemical names and typography are quite common for anyone who occasionally pays attention to these things.