A.B.
There is nothing wrong with keeping him in a crate. I have 5yo that hasnt been in a crate for almost 4 years. This year for some reason he is getting onto the counters, garbage or even if I do pick everything up we come home to something chewed up. This last time was a box of Kleenex. Needless to say he is back in a crate. I also have a 1yo and we started to slowly let her out of the crate a little at a time. She was fine for awhile but is now again chewing on things. I came home one day to a pillow thrown about the living room.
A crate is no different than a den that they would have in the wild. Some need to be crated their whole life due to a slight separation anxiety. He will ok and will probably welcome the crate back.