Yes. They are both accommodations due to differences from the ideal of creation. They're not the same, obviously.
In principle same-sex relationships can reflect God's intention as well as opposite-sex relationships.
One flaw with this comparison is people who lost a leg really want that leg back. Not a crutch.
Now there are some disorders where people actually fantasize getting their leg amputated but that is a rare and not entirely on subject.
But in the disability case people really don’t want that disability. In the case of homosexuality the case is usually they do.
So we have some problems with the comparison.
At any rate, they are both departures from the description given in Genesis and the Gospels.
Both departures yet not truly equivalent.
God did not design marriage to be polygamous. He did not command the patriarchs to do so, and when they did it caused serious relational problems.
So polygamy is disordered according to God’s design and we don’t as the church accommodate it.
In the NT we are told to flee two sins. One is idolatry and the other is sexual immorality. Sexual immorality is fornication. Or illicit sexual relations. This includes any sexual relationship outside of what Christ confirms in Matthew 19.
Therefore, we have no authority as the Church to change what Christ Himself upheld. And notice He confirmed this union of man and woman while taking the Jews to task on divorce.
Many churches took their “authority” to re-establish what the Jews of Jesus time established on divorce. Look where that got us. The “Church” (minus a few denominations and the Roman Catholic Church) took non Biblical positions in divorce and not only the Church but our society suffers.
Christ never gave the church authority to change marriage and make divorce easier.
He did demonstrate we are to feed the hungry, clothe the naked, take care of the widow and orphan. He also by example healed the sick and infirm.
So getting someone an artificial leg is emulating Christ. Redefining what He clearly defined as marriage is not something He left as an option.
I think in a lot of these threads we come to a conclusion someone who is a Blood bought regenerated Christian who is homosexual will continue to be led by the Holy Spirit to continue on in these relationships. As if that is the “incurable” to God’s Power. Or that such a brother or sister cannot somehow live a life without having sufferings and challenges. We as the Church seem to think we alleviate or eliminate suffering and challenges by allowing our brethren to succumb to them. Water down what God has revealed because hey we don’t live in 1st Century AD, even though these sufferings and challenges existed then.
We should note the laundry list of sins in 1 Corinthians 6 ending with:
11And that is what some of you were. But you were washed, you were sanctified, you were justified, in the name of the Lord Jesus Christ and by the Spirit of our God.