I think you are mistaking a figure of speech for a dogmatic assertion. We all use figures of speech in common everyday language. “I love meatballs,” or “I’m sweating my ass off.” There are literally thousands of examples. The scientist saying “that shouldn’t be there” is using a figure of speech to say it is something unexpected, something new to add to his knowledge and to be explored. Not arrogance, but wonder.
That’s correct. Also — it is a noteworthy statement because it indicates a surprise finding.
Could be, I just read it one way. I guess the climate change scientists have given me a negative view of the professional scientist.