It was original planned to be a totally separate route.
While I cannot go into the specifics, the team felt that Darnell was too little of a threat in this route, and occasionally, needed to pop up to be an active antagonist with the occasional optional scene.
Why then not just kill him, as Red threatens to do. He lost connection/importance to the story long ago, ofc except for whole Tiffany thing where you could use him and could threaten MC with NTR that wasn't so forced. (from my "reader/player" point of view)
And btw, MC literally helped him when he was at his "lowest" and after all this time, is that best what can you do for/with him? After all this quiet setup, *that's all/it*. As I see it now, he too 1-dimensional bully from start of the game, there's was NO growth, NO expantion on him or on things that's surrounds him/his entourage. (that scene in club not really counts) POTENTIALLY, after he was beaten up and we were introduced to his sister, you could do so much MORE with him and his character. (we talking about so many possibilities here, that even most boring/cheesy, like "becoming some kind of friends with MC", isn't so far fetched, even plausible. Sooooo MANY possibilities for the story)
As he is in the story right now, he's nothing. I have ZERO interest in anything that even remotely touches on his part, he is too 1- dimensional to be any threat/interest for this story, he was out of picture for way too long to even matter anyway. 6 months of downtime deff didn't helped much to that, just between us. (you could swapped him with any other bully and almost no one would give a single flying fuck about it) Threatens MC or not, it doesn't matter, we already as readers/ players are over him. At least I don't care. (with 5 in STRENGTH MC literally a GOD among man *sarcasm*) So isn't better to just let him go to the background or just take him out entirely. For this route he already means not much, not personally.
And BTW, that's scene "hhmmm, such good day to waste my time staying under windows of my GF house, instead having fun with my GF/houmies ot going to the club and banging some hot chick!(yep, he's that boring in my eyes)" or let's take different scene "I'lL PuT SupER-dUpeR CoNtRoLeR iN My lOCkeR, WhAt PoSsibly cOuLd Go WRoNg, UHHHHH. Bc if I don't do this, this stupid setup will never happen the way it did"
(while I'm at it: bimbo thing, was waaaaay too abrupt, it seemed kinda forced. JUST SAYING)