I think we know for a fact that some hitters are more talented than others. Bryce Harper is more innately talented at hitting a baseball than Seth Smith. Both are major league hitters, but one is obviously more talented than the other. So we can't really say that the talent of hitting the baseball is binary. It clearly exists on a spectrum. But of course everyone knows this and I don't think OBF or whoever meant "binary" in the literal sense of the word. The underlying question was if whatever innate level of talent the player has could be "ruined" by exposing that player early to major league caliber pitching.
I don't think we know the answer to this question or if it's even possible to get to an answer. The skillset is rare to begin with and even players that top out at AAA are marvelously talented individuals.
I worry about Zunino because I suspect that, for all but the very elite level level talents (like Bryce Harper), learning to hit is a process in which the brain and the nervous system adapt from constant exposure to pitching, where the quality of that pitching is ratcheted upwards over time. Can that same adaptive process work in Zunino's case? I suppose we'll find out at some point. But, if he fails, we probably still won't have the answer to our question.