Advice on using Actions

I recently started using Actions to make game structure better, so there is a lot I don't know, but one video on YouTube caught my eye. The guy had made a separate GameObject with a script w$$anonymous$$ch contained all Actions used in the game.

Somet$$anonymous$$ng like t$$anonymous$$s:

public static Action OnActionName1

public static Action OnActionName2

...

public static Action OnActionName...69

Because I usually declare all my Actions in different scripts, t$$anonymous$$s seemed like a great idea, you just call ClassName.OnActionName and get any Action you need, but I have never seen anyone else do it. Is t$$anonymous$$s approach somehow bad?