Chinese, which is what the link focuses on has similar context issues. I understand the context problem you're talking about. A sentence can have multiple meanings until grounded in context.

Context can be derived from the language, just not necessarily in an isolated sentence. It may be derived from the sentence that precedes it. Bilingual LLMs have that figured out much better than traditional translation systems.

It's definitely possible for a preceding sentence to not have the context necessary but humans would struggle with that too.