Honestly, I think the wording here is... fucking awful. But the intention itself doesn't actually seem deceptive or malicious at all once you understand the pricing model.
If I can't view it, how do I know if I would consider it safe to make public?
I'd have to basically make it public, look at it, then choose to keep or delete. Which is pretty much exactly what they're doing right now.
What was created as a private document should never be flipped to public without the user explicitly choosing to do that.
It's saying - Go delete things you don't want public before you hit cancel, because otherwise they become public.
Honestly, I think the wording here is... fucking awful. But the intention itself doesn't actually seem deceptive or malicious at all once you understand the pricing model.