Honestly, I feel the same way about Venezuela. It's an utter disaster.
My apologies, I wasn't trying to conflate your two arguments.
As for the constitutionality of the move by Guaido, Noah Feldman summarized the issues best: https://www.bloomberg.com/opinion/ar...-regime-change
It's hard to argue that this meets the criteria under the relevant article.
While it could be sheer incompetence, I'm actually mildly inclined to think that Bolton did that on purpose. It seems like the kind of not-very-subtle and slightly petty way he has of flexing US muscles.