The thing is the Ultra Beasts they DID try to play seriously, they couldn't add up to the grandeur. They both got defeated more through plot armour than a resilient struggle by the heroes, making it feel like they never really stood a chance of being a threat anyway. Lots of previous baddies have in fact suffered a similar writing problem, making the dread and drama feel phoned in.
Playing things more light and comedic is unexpected but at least they played that to it's fuller potential.
What in the world your taking about. The only Ultra Beast that was taken seriously was Buzzwole and Guzzlord. But most of the Ultra beast are more jokes then anything else. At least Lampent and Malamar put our heroes in danger compare to the soft and weak Ultra Beast
Is anyone else a little disappointed that they did not get to keep the brick mon? I know that there is the mission to return the Ultra beasts to their homes and maybe it'd be over powered but that was a huge and cool pokemon that Ash sent away. Come back Stakataka!