What I mean is that I assign the matter relatively minor significance - so I get on with other things.

Yes, I indeed made a mistake by missing this aspect (factual description of how a belief caused actions as opposed to normative discussion of actions given the question of correctness of the belief).

As a separate matter, I don't believe the premise is correct (that any additional effort is required to phrase things non-weasely), and thus that the belief in question plays even the explanatory role. But this is also under discussion, so I can't use that as an argument.