I wouldn't say The Orville is a copy of TNG any more than Stargate SG-1 is a copy of TOS, but they do have a lot of the same spirit, and the same philosophy. The show has things it wants to say about the world and doesn't hide how it feels. But it's an awkward mix of sitcom and Star Trek, at least at first. Shows like Lower Decks feel very natural with their comedy, while Orville tended to stall a bit while switching gears. At least, that's how I remember the show. It's been a while.
To be honest, I quit the show after season 2 after I realised that it was never going to stop being about relationship drama. It felt like every single episode had characters on a date, often the captain/lead writer/showrunner himself, and I just didn't want to watch that. But the fact that no one else ever seems to bring this up makes me think this is mostly a 'me' problem.