The practice of Denial of Communion has NEVER been predicated on the subjective guilt of a would-be Communicant, but on the objective scandal that would be given.

For example: When Joe Biden approaches for Communion,  the person who gives it to him commits a mortal sin, not because he has knowledge of the state of Biden's soul, but because giving Biden Communion teaches the whole community that promoting abortion is not a mortal sin.

In AL, the Pope imported into the Denial of Communion issue the totally irrelevant issue of subjective guilt. Thus, the Pope created one of the confusions that the five dubia seek to clear up.