Abuse and exploitation do, in fact, have different legal definitions in Utah.
Livestreaming a sexual act without the consent of the 2nd party wouldn't be covered under sexual abuse, as the party is consenting to the sexual act. But, would be covered as exploitation, if the party doesn't consent to the distribution of their image [2].
I'm a huge critic of the church's influence on our legislature, but it's not an extension to porn and/or prostitution. If anything, it's a strengthening of privacy.
[Edit] spelling, sources, and clarification [1] https://le.utah.gov/xcode/Title76/Chapter5/76-5-S406.html [2] https://le.utah.gov/xcode/Title76/Chapter5B/C76-5b-P2_180001...