This isn't a discussion about finding absolute truth, which is hard because nobody has even created a univerally generalised definition of truth, let alone a way to find it; and literally everybody knows that, implicitly or explicitly.

This is a discussion about how a model that is fine tuned to be polite is less true than one that is not

I don't think politeness has anything to do with it. It is the tradeoff between

1. ability to rely on its own intuition

2. additional cost necessary to be more skeptical in general

3. more trust in published articles in reputed sources