Ken,
Romans 1 specifically talks about those who promote homosexuality:
For their women exchanged natural relations for those that are contrary to nature; and the men likewise gave up natural relations with women and were consumed with passion for one another, men committing shameless acts with men and receiving in themselves the due penalty for their error.
And since they did not see fit to acknowledge God, God gave them up to a debased mind to do what ought not to be done. They were filled with all manner of unrighteousness, evil, covetousness, malice. They are full of envy, murder, strife, deceit, maliciousness. They are gossips, slanderers, haters of God, insolent, haughty, boastful, inventors of evil, disobedient to parents, foolish, faithless, heartless, ruthless. Though they know God’s righteous decree that those who practice such things deserve to die, they not only do them but give approval to those who practice them.
The New Testament is really clear that those who follow God can’t give approval to practising “debased” things which “ought not to be done” and which are “contrary to nature”.
This is about sin, not sinners. This is not about the person who struggles with homosexual urges. This is about the person who fully affirms and promotes such a person giving in to sin. It is analogous to someone who struggles with beating his side being told, “Go ahead. Indulge yourself. Hit her as much as you want. It’s fine.” Or it is analogous to the preachers who tickled the ears of slave owners, telling them it was OK to buy and own chattel slaves, because the slaves weren’t fully human anyway.
Anabaptism is about following and obeying the clear message of scripture and one of those is that we ought not to uphold and support blatant sin.