That's because he's a Marxist as well. The problem with Venezuela isn't Maduro, it's the corrupt socialist system that destroys everything. Guaido assuming power is the equivalent of the "moderate" Iranian president who took over for Ahmadinejad.
So our assisting in or engineering the overthrow of Madura won’t make any difference?
That’s another reason to let the Venezuelans either stew in their own electoral choices or overthrow the regime themselves. The more we help them, the less likely they are to learn a lesson from this, and the sooner they’ll be back in the socialist mode.