"Does the statement, "The removal of the LGBTQIA+ person from the sin category is akin to this century’s abolition of racial discrimination and the passing of women’s suffrage." have any credibility?"
Respectfully no for this reason. Skin pigmentation is what you're born with. As noted above you're not born homo/lesbian.
Women's suffrage is really not a biblical issue as it is more of a societal issue. There's no direct instruction for or against.
I appreciate your civil response. At the same time I am confident the issue is most certainly, "some people are indeed born "homo/lesbian" and how do we responsibly regard that segment of our society?