The Anglican church has 39 articles of religion - they properly distinguish the church from Romanism, Calvinism and Anabaptism. I want to call attention to the following. My interpretation is bold.
VII) Although the Law given from God by Moses, as touching Ceremonies and Rites, do not bind Christian men, nor the Civil precepts thereof ought of necessity to be received in any commonwealth; yet notwithstanding, no Christian man whatsoever is free from the obedience of the Commandments which are called Moral.
Yes, we are still called to obey moral commandments. Marriage, however, is a matter of civil authority.
XXVI. Of the Unworthiness of the Ministers, which hinders not the effect of the Sacraments.
Although in the visible Church the evil be ever mingled with the good, and sometimes the evil have chief authority in the Ministration of the Word and Sacraments, yet forasmuch as they do not the same in their own name, but in Christ's, and do minister by his commission and authority, we may use their Ministry, both in hearing the Word of God, and in receiving the Sacraments. Neither is the effect of Christ's ordinance taken away by their wickedness, nor the grace of God's gifts diminished from such as by faith, and rightly, do receive the Sacraments ministered unto them; which be effectual, because of Christ's institution and promise, although they be ministered by evil men.
Even if you thought V. Gene Robinson was the anti-Christ, it wouldn't matter. Besides, the antichrist probably lives in a little corner of your heart. Mine, too.
XXXIV. Of the Traditions of the Church.
It is not necessary that Traditions and Ceremonies be in all places one, or utterly like; for at all times they have been divers, and may be changed according to the diversity of countries, times, and men's manners, so that nothing be ordained against God's Word. Whosoever, through his private judgment, willingly and purposely, doth openly break the Traditions and Ceremonies of the Church, which be not repugnant to the Word of God, and be ordained and approved by common authority, ought to be rebuked openly, (that others may fear to do the like,) as he that offendeth against the common order of the Church, and hurteth the authority of the Magistrate, and woundeth the consciences of the weak brethren.
Every particular or national Church hath authority to ordain, change, and abolish, Ceremonies or Rites of the Church ordained only by man's authority, so that all things be done to edifying.
God's Word, however, is fairly supple. The view, however, is that breaking traditions is bad because it offends order; hurts the state; and makes the weak in faith less faithful. This is more credible and useful than a theological argument. Theological arguments do not lend themselves to rational discussion, I suspect, because heaven and hell are at stake.