Is Hex worth it at high levels?

[JackPhoenix]

I am no more ignoring the text of the book than you are. Agree to disagree time.

So the text about spell effects being unnoticeable unless the spell says otherwise doesn't exist, according to you?

On a more general note, the vast majority of actions in the game have components that are Verbal and/or Somatic they just aren't spelled out. In fact the actions don't have any visual or audible tells tend to be more explicit on that fact. So assuming all actions granted by spells fall into the latter category is also pretty incongruous with the larger rule set.

No, they don't. Components exist ONLY with spells, and even then, not in all cases.