Sometimes Feeneyites are allowed if they don't spread the error, and the priest determines they are honestly ignorant of Catholic teaching on BoD and BoB.
If that "priest" was a priest of Our Lord, having a mandate from a bishop with an apostolic mandate of Our Lord, and he determined that some of his sheep were honestly ignorant of some Catholic teaching, in short: if and he was a true priest, then he would remove the "honest ignorance" of his sheep and simply tell them about the said Catholic teaching.
If he doesn't, but rather tells you about their purported ignorance, then I, if I was in your place, would hurry up and run away from that laughable "priest", and repent to have it let happen to have met hin.