Dr. Leon Podles, in his book entitled "The Church Impotent: The Feminization of Christianity," notes that, "Many Catholic dioceses actively discourage vocations to the priesthood, in a transparent attempt to put pressure on Rome to allow the ordination of women, or at least of married men...Because Christianity is now seen as a part of the sphere of life proper to women rather than to men, it sometimes attracts men whose own masculinity is somewhat doubtful. By this I do not mean homosexuals, although a certain type of homosexual is included. Rather religion is seen as a safe field, a refuge from the challenges of life, and therefore attracts men who are fearful of making the break with the secure world of childhood dominated by women. These are men who have problems following the path of masculine development..." (p. XIV).
Effeminacy (and here we are not necessarily speaking of homosexuality), has become the forgotten vice in seminary formation. This as many masculine men continue to be excluded from pursuing priestly vocations and masculinity itself is banished to the margins of the Church.
Related reading here.