The sisters' company briefing vary in detail, from Juliette's highly superficial, to Dominique's accurate but general, to Veronica's very specific. Dominique is the one who makes the explicit Desert Stalker reference:
In any case it's just a small nod to the game, nothing suggests it'll have any further relevance beyond the easter egg.
Kane starts out as a slave, but can rise in the ranks quickly if you choose. If you play him as dominant he'll suffer little in the way of actual abuse and get the occasional chance to do a little abusin' hisself, but for now he's still below many of the women in the hierarchy, Olivia included. The setting is femdom-heavy: The company is run by a cabal of very powerful and mostly sadistic women, whom Olivia joins, and they take their pleasure where they like.
Some scenes can be avoided or skipped, but you will see scenes of mostly abuse, including forced body worship and such, involving other characters.