If you learned to play piano in a different notation, Western clef note sheet music would be cryptic. Not everyone has learned the same language of expressing precise concepts.
If someone is a non-native and less than fluent English speaker being presented with this problem in English, then I think your analogy holds. If they are fluent English speakers, however, then I think the inability to translate simple English statements into logical constraints is a failure to solve the logic puzzle itself, not a different type of failure indicating that the problem description is "cryptic" or confusing.
