What you're doing here is the opposite.
You seem confused.
https://en.wiktionary.org/wiki/credentialism
"belief in or reliance on academic or other formal qualifications as the best measure of a person's intelligence or ability to do a particular job."
Which is also not what you're doing; your case appears to be that credentials are a reason to reject a sound explanation or argument, which is absurd.
What you're doing here is the opposite.