I agree up to a point. You cannot make progress with someone without acknowledging their humanity and perspective as valid.

But... that presume their perspective is valid. Which is true more often than many think, but not always. A perspective of "the lizard people living in the Earth's core created coronavirus in order to usher in the return of Elvis" is... not, not valid, not rational, and not worth engaging with.

You can constructively disagree with someone over opinion, or interpretation of facts. But if you cannot even agree on the nature of facts, and rationality, and the scientific process itself, then no, there's really nothing more you can do with that person.

If someone actively undermines the very concept of rational, constructive discourse, and actively spreads malicious, malevolent lies, then no, you are under no obligation to sympathize, empathize, or respect their viewpoint or them.

That someone disagrees with you does not mean they fall into that category. But there are people who fall into that category, and engage in those behaviors, and they are as close as we have to "evil" and should be treated as such.

To do otherwise is to engage in self-harm. And that is also a trap you need to avoid.