Also valid, but also not aligned with human nature. Persons with celebrity or notoriety of sort often are often viewed as having a higher importance of opinion, even when their knowledge of the subject is severely limited, or even absent.
I"m not arguing that they aren't aligned with human nature. Both your earlier statement about what you thought I was saying, and this one, are correct. Human nature isn't rational. Being civil isn't aligned with human nature either. But through rationality we've overcome, for the most part, the parts of our nature that are uncivil (it seems we're unlearning those lessons).
Some people, the rational ones, reason that the validity of an opinion isn't based on how we feel about it, but by how it's reasoned. Principle, in and of itself, isn't even the thing that necessarily makes the opinion more credible. Maybe it helps establish consistency, but principles aren't necessarily rational.