Yes… that’s why they use the word “could”. This is how research works and what reasonable science reporting looks like. There were no promises or wild claims made in the article.

It’s hyperbole for effect.

It’s like “fuck”, it means several different things depending on context.

For example, there’s also the meaning of lamenting that people seem too cavalier, ignorant, or dismissive of something you feel is important.

But you’re right, the meaning in context is sometimes unclear and there are better ways to communicate your feelings.

As for responses, you could always go with a polite “What do you mean?”