You know, I questioned in here or another thread a few days ago, it's like some kind of groupthink. When the trailers were first put out there, people were saying "It's like TNG." And when they reviews came out, many said "It's like TNG" likely because it's the most recognizable, and now it's becoming ingrained.
Besides DS9, Orville is the least like TNG. The look, feel, characters, and stories have much more in common with TOS, Voyager, and Enterprise.
Mercer is like a lot like Archer, Bortus is a lot like Tuvok(minus the sarcasm). Malarkey is a lot like Paris, the strong girl like Hoshi, etc. The aesthetic (Yeah, that word is becoming intolerable on here) is a lot like Voyager. Also, the Captain and XO are seated side by side, and are a man and a woman with a "will they, won't they?" dynamic. And of course, the intro is almost exactly like Voyager.
Conversely TNG character's are perfect. They are the best and brightest of Starfleet, and can tech the tech out of anything. They are very serious and methodical. Picard is the chief of a board room, and his executives sit at their conference table and brainstorm, and give Powerpoint presentations.
When they get in trouble, it's due to external forces, and not due to their own faults.
Orville can do these stories from the 60's, and they feel fresh, and crisp. All the genres on TV nowadays are starting to blend together. It's all becoming high drama, and every drama wants to be a soap opera, every commercial wants to be quirky. The TV and movie landscape is so utterly oversaturated, and conformity dominates. I don't have cable, and I had to dig out an old antenna and hook it up to even watch Orville.
...sorry for the rant.