Yeah, Fox has never done any favors to the genre when it comes to promoting such series. However, I have to take exception with Orville being "very serious." He's got a terrific group of creators who are giving him great Trek material but it still seems like MacFarlane then injects his low-brow humor wherever he can. The tone often feels off and out of place, which is what makes me cringe.
It reminds me of having an engaging, philosophical discussion in college and the kid who was the class clown in middle school throws in a fart joke just so he can say he was part of the conversation. Forced humor makes me cringe, like Jar Jar stepping in poop. The material deserves better.