You’re comparing a non-fiction, evolving scenario of US imperialism to a fictional scenario where a “somebody” removes a guy you don’t like with zero strings attached, no ulterior motives, and no stated motives or historical context before or after.
Your comparison is poor, half-thought (IMO), and driven by catharsis. You are tacitly endorsing hegemony - a position enabled by your subconscious knowing (or hoping) that your general safety and comfort is protected living inside of a fascist superpower.
I read statements like yours and my heart hurts.

Under rule of her by duress, not open-ended self-determination. The mission wasn’t “we’re gonna remove a dictator and let the people of Venezuela determine their destiny, let us know how we can help ma’am.” It was “your guy is a narcoterrorist [citation needed] and we’re gonna rebuild your oil infrastructure.” So in your opinion it’s not imperialism because we don’t yet have a colony there? I’m really struggling to grasp why you don’t think this is an expression of imperialism.
US Imperialism has expressed itself throughout history in many ways, regardless of congressional approval and regardless of its status as a “war” or not. You should do some reading on how Hawaii became a state, for one example among many. Also there’s this.