Priest might think he's vaguely familiar, but unless the person is involved in church activities, the priest is unlikely to know his name or details about him. Not in a church where hundreds may attend Mass.
And if this passes I guarantee to you that Catholics who have weighty sins will go to confession somewhere other than their home parish.
“Priest might think he’s vaguely familiar, but unless the person is involved in church activities, the priest is unlikely to know his name or details about him”
So then there’s nothing for him to report and the law does nothing. So what’s the big deal? Why complain?