I’m going to have to be in the minority here and side with OP on this one. While I understand the “why” behind this particular scenario, it’s a frustratingly common-enough occurrence with DL to have to play their married segment games. And while it’s all semantics, I do agree that “not offered” or “not available” would be a more truthful statement than “sold out” if it was never a viable/legal/permitted option to begin with.
Just my two cents.