My understanding is that pretty much anything goes in the unitarian universalist church. It’s like a melting pot of religions. You can mix and match and make up whatever you want. I went to a funeral last year at one of those. It was a mixed bag for sure.
That said, anyone who says abortion is not a sin is suppressing the truth in unrighteousness.
15 years ago, I was in China on a project with a bunch of Americans working on a project. We had some down-time with the local Chinese staff. The subject of religion came up, and when one of the Americans claimed to be a Unitarian Universalist, the Chinese asked - "what it that?" The UU presented a her "belief statement" on a card. A Chinese man read it, wrinkled his brow, scratched his head and said, like he was being played for a fool: "This isn't a religion, its a Nike advertisement!"
Unitarian The Church of Indecision