Honestly, to me it just looks like Halsin's writer threw a hissy fit when the higher ups told him to make him a companion due to fan popularity. The whole thing just reads like one big revenge plan. Or maybe the higher ups just thought it was a great idea to center this game around sex and/or sexual deviance, because that's an age old surefire way to get sales. (Personally I was quite disgusted when Tusk the boar told my character that he was upset that Halsin wasn't around to service him.)
Either way, much of this game seems to have been written by a hormone-hyped teenager. Or maybe I'm just too old for video games now. In any case, I certainly don't like this being done to one of the very first game franchises that got me into RPG PC games to begin with.