Does the word ‘believe’ have a meaning?
I recommend the definition of belief that appears in the forward to “Essays in the Philosophy of Science by Charles S. Peirce” (viii, Vincent Tomas)
A belief is a habit, i.e., a readiness or disposition to respond in certain kind of ways on certain kinds of occasions.
It follows that a so-called belief that has no practical consequence for the believer’s behaviour can be nothing more than the readiness or disposition to respond “yes” when asked “do you believe in belief X?” I feel that a great quantity of the things that are argued about are of this kind. Their significance to the believer lies in the fact that they have come bundled together with other beliefs that do make a practical difference to the believer’s behaviour, and have been accepted as necessary corollaries on the recommendation of authority.