I didn't say I could not respect someone who sees the world differently. I said I could not respect someone who doesn't agree to the same terms of discussion.
Let's take a recent article linked on HN, on astral codex by Scott Alexander regarding Ivermectin. If I was to engage in a discussion with someone about Ivermectin, I would more or less insist that we both read this article as a starting point, since it already gathers, critiques and synthesizes almost every study that has been done. If someone wishes to defend the use of Ivermectin in connection with COVID19, then I'd have to insist that they answer the evidence presented in that article that strongly suggests that there is no reason to use it in parts of the world that do not have significant levels of parasitic worm infestation.
Now, perhaps they have some similar "reference" article that they'd insist we also read, and also had some similar basic evidence that they feel I should respond to. That's fine.
But we have to agree that our discussion is going to be evidence based, and that when I bring up evidence that contradicts their stated claims, they need to respond to the evidence by doing more than saying "I don't believe that'. Same in reverse, obviously.
If they can't do that, then sure, I can't respect them. If they can do that, then regardless of where we end up, I'm going to have respect for their position, even if I don't agree with it.