sure I'm not expecting a thesis, but it can't be that hard to invalidate what he's saying
I think the worst part about this for me is how they portrayed his arguments/logic as strong in the last chapter, where you see neither Akane nor Senpai could argue against him despite that being so stupidly easy to do.
This also kinda harms the entire portrayal of the female cast because it essentially made it so they're too incompetent until Fuyumine steps up. Because of this, this entire arc can kinda be summarized into a damsel in distress story, where Fuyumine swoops in to save Ena who can't fend for herself, and later Akane who can't give a single argument.
Imagine how much different it could have been if they all ganged up together on Umeki and it culminated with Ena stepping out of her shell and giving him a proper piece of her mind. Instead Fuyumine does everything, and Ena's only input is saying no to being sexually exploited, and the rest of the cast also doesn't get to do anything but react.
And even then all Fuyumine accomplished was to say "using people bad" and then left it at that. He had so many arguments he could have used that would directly invalidate Umeki, but instead he just calls him names and tells him to grow some balls. And you're supposed to cheer him on because Umeki is portrayed as so comically evil you have no other choice (and I think that's part of why he's so evil, so there doesn't have to be much thought put into his take down, because he's so evil any take down is seen as good).
This entire arc is just really poorly written imo. For a series so focused on movies and the industry in general, it leaves so much to be desired when the characters don't properly address a director exploiting his staff/cast. I'm honestly glad this is over.