When reading equivocal language with a proper Catholic formation, one might come away with a Catholic interpretation. But why even use imprecise language when the proper tools for theological discourse are readily available?
You make a good point, if read with proper Catholic formation, it makes sense. However, it may lead to misinterpretation by others.
Again, this just my opinion, but they may have wanted the documents to be more readable by the laity.
That said, a lack of precision will occur. For example, when a physician speaks to a patient about a medical condition, it is often done in a way that promotes general understanding only.