Yes, agreed. It is a term of inclusivity that is applied to observations and models, the testable items. I don't think "we" it is acceptably used for individual opinions unless it reflects the opinions of multiple authors.

The followup definitely uses the "I" (for opinion) initially, but then switches to "we".

As a reader I am not a participant in "we" unless I agree with the statements being made. I think it is this is what made me frosty and say who is this other person, because it isn't me.