Imp, old sport, truer words... 
were ever spoken.
As to the exit of Halston Sage... 
it is my understanding that she was cast in the film The Last Summer and her departure was considered open-ended for a possible return in the future. Hey, she is said to be Seth MacFarlane's main squeeze, so what she wants, she gets--
Sam, in this day and age with the liberal slant prevalent upon most actors and productions in film, TV, etc, I cannot blame you for your being pissed off by the "Primal Urges" episode. Yet I do agree with Imp that if a “simulators”/holodecks were real, what would go on in them would make the goings on in "Primal Urges" seem like a Sunday morning Bible study class for 8-year olds.
And for better or worse, porn happens. 'Dirty Pictures/French Postcards' were with us as Mathew Brady was taking snapshots on Civil War battlefields and the 'Stag Film' era began just after old Thomas E. invented the film camera. So, with the advent of the internet and personal computers-- Well, if you don't know, you are, I am sorry to say, among a very, very small minority.
Porn addiction is a reality, as is addiction of video gaming & other such new fandangled fetishes, and no amount of "Tisk, tisk, tisk... I cannot believe that!" shall make them go away.
It is a sad comment on modern society, but a truthful one. So unless you wish to never ever watch any TV, films or plays offered up these day, be prepared to find content that grates on the ethics and social norms you were brought up with--
Me, I was born in 1947, so the world I was born and bred to has been almost erased because of the White Privilege Racism it engendered. Yeah, "Truth, Justice and the American Way" has been branded hate speech along with common sense and 'ethics' is a forgotten word.
Even our own side, such as "Fox and Friends," grates on our senses. Each and every morning it seems Ainsley Earhardt and Carley Shimkus greet each other with hugs and air kisses as if they have not seen one another in a blue moon. Gadzooks and General Jackson-- I want to throw a brick through my 50-inch. But I don't, I switch over and have re-runs of "Seinfeld" or "Friend" on TBS play in the back ground as I vent myself on my PC.
Yet, we all fight our battles the best way we can and I will continue to watch and enjoy, with a grain of salt, Seth's take on 'Star Trek.' As old Imp says, "It’s better than Discovery."
Let me leave you with this: Sam, if you have to cast the "Orville" out of your personal orbit... 
"Make it so."