This is disingenuous. I've been exposed to alternative viewpoints, saw what I consider obvious holes, and either expressed disagreement or disregarded them entirely. If someone can convincingly (from my perspective, not theirs) illustrate a flaw in my reasoning at that point I have changed my mind by definition of it being convincing.
When people say thing like "other people aren't interested in changing their minds" what they really mean is "other people didn't find my arguments convincing".
I mean this is well-known phenomenon. People not only disregard others' arguments, they even reject facts if they contradict a core worldview.[1][2][3][4]
You trying to rationalize this as "other people didn't find the arguments convincing" is a meta version of this. A deliberate ignorance of this cognitive bias even when given documentation of its existence.
Most people aren't interested in changing their minds.