I like both shows.
I managed to catch some of The Orville at a friend's place on Star India's streaming service.
It's really bright, fun, optimistic, and clearly born out of MacFarlane's love of what TNG stood for:
There was another speech at an awards ceremony where he heaped praise on TNG.
I thought it was a comedy, but it's becoming clearer it's a full sci-fi drama.
But I'm also enjoying Discovery. Provisionally.
It's doing exactly what forum members here wanted - we had arguments about the merits and demerits of Roddenberry's optimism - people wanted to make Starfleet 'flawed', full of characters who still display prejudice and who's views conflict openly, exactly what some forum members who dislike Roddenberry's vision of a mature society wanted. I am dubious about some of the science, but people said they wanted character above rational plotting, and that's what they got.
I just think the two approaches are different.
It's like that grand old rivalry in geekdom - Star Trek vs Star Wars.
In Star Trek you have a just, truthful and rational society that explores the cosmos in peace and guards against corruption of personality and stands in philosophical opposition and contrast to dark ideologies. In Star Wars you have people fighting for the birth of a just and rational society, amid the triumph of corruption and darkness of the human condition, unexpected good arising amid the triumph of entropic philosophies and ideals. One setting presents an example of a good society, the other the strife for one. The United Federation of Planets is what Luke Skywalker is fighting for. The corrupt Old Republic and descent into an Empire, is what Kirk and Picard aim to prevent, and contrast/oppose in the Klingon Empire, Romulan Star Empire, Ferengi Alliance, Cardassian Union, Dominion and Borg. It shows a functioning Republic.
Liz Miller writing for IndieWire compared the series to Star Trek ... She criticized the lack of creativity, the blatant imitation, and was surprised that the show is "uninterested in being a comedy".
Erik Kain of Forbes, gave a positive review of the show with the observation that "All the optimism and sincerity and lightheartedness of Star Trek is here, and in many ways it's kind of wonderful. I'm honestly surprised something like this exists." He says the critics were wrong and suggests their opinions are based on disliking MacFarlane and his type of humor.
The Orville is as TNG was - a really optimistic show that some critics who understood it's intent noted stands in contrast to the dreary side of sci-fi exemplified in BSG.