Why do you think the married Anglican and Episcopalian clergy didn’t stop those groups from actually openly accepting gay clergy? I mean among Catholics, the ones now most in favour of ending the discipline of celibacy are also the ones invariably most in favour of homosexuals. Try to find one catholic who thinks homosexual priests are cool but also really digs the discipline of celibacy.
Freegards
It's a good question, and I don't have a good answer.
Most Episcopal clergy I have known are either homosexuals themselves or are heterosexual (or bisexual) females whose mission in life is ending oppression of gays and lesbians.
I have imagined that the pre-1965 RC clergy formed much more of a fraternity than the married Episcopal priests, who usually flew solo.
But, as I said, you raise a good point.