If anything, The Orville is proof you can't do that kind of show again. There are people on this board who will argue vociferously that it's not a parody, but, well, it is. It's warmed over TNG nostalgia with a lot of crass jokes aimed at 13-year-old boys. Maybe the jokes are there to support a parody defence if Paramount/CBS sue them for ripping Star Trek off so blatantly. But maybe they're there because we have several hundred episodes of Berman Trek already and that was the Orville's way to try to make their retread feel a bit fresh. McFarlane wants to play The Orville more seriously sometimes, but he's shot himself in the foot by making several of the core characters, including the captain (his own role), walking jokes with no depth. They can try a scene like "There are four lights!" but no one is going to buy it from this guy. You'd expect him to say something like, "sure, there are five lights, those four there and the one up your ass." I mean, this is a show that did an episode about how funny it is that an alien is raping all the Orville's cast.
The closest thing I've seen in recent years to '90s TV was when my wife watched NCIS a few years back, but even that started doing bigger productions and more complicated ongoing storylines. TV changes. Watch the original Outer Limits and imagine someone running an hour-long anthology series with really slow-paced SF stories now. It wouldn't happen. Some of the episodes are classics, but they just don't make them like that any more.