Curate, connect, and discover
I'm sure there has to be meta surrounding Dennis and keeping the cameras constantly rolling but I haven't seen any (feel free to direct me to them), do we all think he's doing this in some part out of self protection?
Not to undermine how creepy and invasive it is for the women to be filmed, but I really do believe he feels safer with video footage.
We know Dennis has control over every particle in his life and he's tired, he's fkn exhausted, he wants to let that control go sometimes, he wants to be bound, but it's scary to be that vulnerable, he can't fully allow that for himself, so he keeps some sort of power advantage with the cameras. Just in case. So maybe, maybe, those cameras Dennis has in his room are proof for him that he's safe, he'll be safe.
And then he shows the footage to his friends to make sure it all went well, that everyone's happy, to receive praise that he did a good job.