If you want to split hairs over whether they were "priests" in the first place, you are missing the point.
They are all pedophiles.
You are exactly right. Pedophile or pervert priests are to be forbidden from any public priestly function. Because Rome is nuts, who enforces that in the traditional world? Bishops. If the bishops fail or if we're talking about a rogue priest, the duty falls to the laity, unfortunately.
Laicised priests are no longer priests, whether or not they ever were, and are forbidden from not only any priestly function, but from dressing as a priest or presenting themselves as priests.
Remember, though, that although laicised, Holy Orders, if ever received properly, cannot be removed.
These are very strange times we live in.