Earlier quoted context omitted.
When you see someone look down on another's thoughts because they aren't "critical thinking enough, you'll find someone (or a culture) that assumes they have all the facts, and have considered all possibilities. That is hubris. I find people who are truly open don't hold so desperately to facts, because they tend to change over time.
The fact that this entire comment could have been written by (for example) a flat-earther in response to criticism of their flat-earth beliefs makes it difficult to understand what kind of "facts" you are disappointed that people hold so dearly to, and what kind of facts you believe change over time. Depending on your response, I might agree entirely with you or disagree entirely. I understand that human knowledge is…
500 years from now I have absolutely no doubt that there are things we absolutely believe to be truth to be proven wrong. (Maybe light isn't both a wave and a particle?)
Heck, maybe antibiotics do contribute to autism some how. I very much doubt it. But it would be hubris to assume I know absolutely everything there is to know about the human body, antibiotics, and all their interactions. So I disagree with anti-vaxxers, based on current evidence. But I won't dismiss them and consider them less intelligent.