It's not BS. This makes complete sense. Especially more so since because Zaza isn't some world beater worth the sacrifice or extra leeway. You play enough, perform enough, you get considered. It's fair and simple. It's the other roles and some other names Conte is bit stubborn with (Berardi, Insigne, Saponara, Bernardeschi, Romagnoli, Rugani before he joined us).
Zaza he likes, he used to played regularly, not just call up. In fact Conte was criticized, on this forum and in general for playing Zaza (and Immobile) for whole last season despite how limited and average he was. They were calling for other names. Non stepped up until Pelle made the spot his.
I know he is scoring in good minutes for us and all right now, but we don't need to become all biased and drunk on the Kool aid that quickly. Zaza is likely to not start until next coppa or injury crisis so this means it's not ideal chances to earn a NT spot. If all the other choices suffer in similar way, then yeah maybe, but not likely.