UPN was the network that originally produced ENT (and VOY too.) Unlike TNG and DS9 which were syndicated (so the show's producers had more freedom to do what they wanted and tell the kind of stories they wanted), UPN suits interfered with production because they thought they knew better than the people they put in charge of the show. They forced the showrunners of both VOY and ENT to make only an episodic series without any real challenging story arcs other than just play-it-safe stuff. They also pushed for an over-reliance on "sexy" with 7of9 and T'Pol in their catsuits, decon gel bathing, masseusing, and other ridiculous crap, because they thought that was what their audience wanted. They were even going to put some boy-band of the week on ENT because they thought that was what their target audience of 14-year-old boys wanted. Even the Temporal Cold War was their idea because they didn't even have enough faith in their show that it would stand on it's own; they thought it needed some futuristic nonsense for the audience to accept it. By the time they realized that they'd fucked up, it was too late.