You're right, I may have been too dismissive, and you're right, science is about curiosity, but the "just asking questions" approach is a way to demolish perfectly good science. You can't prove a negative, and so throwing doubt after doubt at something is a good way to discredit a perfectly valid point because eventually you run out of answers. That's why I asked why they had that belief.

The user that asked the question didn't further engage, they just threw in some doubt and walked away. That doesn't feel like scientific curiosity. That feels like pot stirring.