The truth is the truth, whether or not it might align with a narrative or stereotype.
For example: NSA wiretapping was a truth that happened to align with pre-existing conspiracy theory narratives. It was easy to dismiss it as a crackpot theory, but that didn’t make the truth any less (or more) true.
If someone says “if you believe this might be true, you’re [a bad person]”, I would consider this person fundamentally against truth, and someone more interested in shaping narratives than upholding accuracy and integrity.
With so many conspiracy theories becoming truth and so much news proving to be lies over time, I now have more trust in something labeled as a conspiracy theory than in official news.