[conjectures]

Actually I sympathise with this response. Getting tired myself of people larping as fact checkers and professional skeptics.

Not enough detail in someone's response? Here are some ideas:

1. Ask moar polite. Not, "I don't think the story adds up."

2. Assume the story is yet true and go to prove it to your satisfaction. Post the links and thank op for the interesting nerd snipe.

3. Enter the proposition into your mental database with some lower level of confidence and move on.

[clcaev]

Moreover, people often forget that the poster probably took some time out of their life to chronicle something. Starting by acknowledging personal experience and their effort documenting it goes along way towards building a collaborative discussion.