But the priesthood does not, in itself, demand this; the Church in the Latin Rite demands this. I agree with you that Bevilacqua seems to be saying that the priesthood is a "greater good," which is why his theology is bad. There are many gifts, but One Spirit.
Let's rid ourselves of this triumphalist notion that the priesthood is a superior way of life. It is not. It is a different way of life, to which some are called. Others are called to do other things in the Vineyard.
The "superiority" of Holy Orders has led many a man to think that he is, in fact, superior to the rest of men, which is as pharasaical a view as one could have.