While it's true that so far they only removed Maduro, removing a sitting president and his wife is a show of power, it's a "we do whatever we want". What is stopping the US to remove the next person, and continue doing so until as they find someone that they like? Or to organize an up-rising or a coup? The writing is on the wall.

And it appears they did so with assistance from within the government, at least with assistance from the military. That's why the operation went so smoothly. It seems like it was unusually easy, precisely because it was.

Update from Reuters: ‘"We're going to run the country until such time as we can do a safe, proper and judicious transition," Trump told reporters. […] "We can't take a chance at somebody else takes over Venezuela that doesn't have the good of the Venezuelan people in mind. We've had decades of that. We're not going to let that happen."’

"Trump says US will ‘run’ Venezuela until ‘judicious transition’ following capture of Maduro"

https://www.cnn.com/world/live-news/venezuela-explosions-car...

Equating a person with the government or the nation is a common trait among autocrats. L'État, c'est moi.

Not yet. Once the anger metastasizes into a new wholly anti-american government, new targets will emerge.

Trump is far from universally loved, but just imagine what the US would become if an outside nation swooped in and captured him. 100% of the american people would be screaming for blood.