Views on allowing a puppy on the couch

We have a 13 week old, 12 pound rescue mix. We don’t plan to allow him on the furniture or our bed when he eventually gains access to the full house, but we do allow him on our sofa in the sunroom. My wife and I often watch an hour of TV at night on that sofa, and it’s a calm time where if he chooses he can sidle up to us and snuggle against our side or on our lap. We think this is important to our bonding. I have a friend who is adept at positive dog training who believes giving dogs access to furniture is a significant mistake and compromises control of the dog. Just curious about views on that.

One related concern is that recently he has started growling if we try to move him to his crate from the sofa to sleep. We usually back off for a spell and then try again by offering a treat (but with enough of a time passage so he does not think growling earns a treat), and that generally works. He generally settles down and sleeps in his crate well, and we don’t want to habituate him to falling asleep on the sofa. I would appreciate thoughts on that also. Thanks.