I just want to point out that I use UI Widgets as “game objects” all the time. It can make sense to create your whole game in GUI, especially for “classic” mobile game. Then you don’t have to fight with “move game object to gui position”, you can use layouts, anchoring and adjustment modes and a lot of other stuff.
I often think “can I create this in GUI” before doing anything else (and if I don’t need physics the answer is most often yes).