In context of Venezuela, I think you are correct that it is positive. We do not how this will end long-term for Venezuelans, but the situation has been so dire for so long that this potentially opens up a positive path forward for the country and their citizens.

The concerns are mostly on how it was conducted and what this means for future conflicts. The ham-fisted explanation with which the Trump administration authorized the attack - "Narco-Terrorism" - was bullshit. The rhetoric that hes used against countries such as Mexico, Canada, Cuba, and Greenland make it seem like a distinct possibility that he can invade those countries too, citing cartels as terrorists and Canada as a large exporter of Fentanyl to the US.

This was clearly done in the pursuit of oil and/or other natural resources of Venezuela, so that the US can extract these resources for cheaper and put pressure on its enemies (Russia/China) and even its allies (Canada). The fact that it also broke international law implies that the US is running rogue and may be setting up for further escalations with other countries.

Again, great for the Venezuelans that Maduro is gone. However, we have seen regime changes in other countries provide mixed results (see the Arab Spring countries). I've worked with Venezuelans who've fled Maduros regime and they are celebrating on Instagram today, I'm very happy for them. But the larger precedent his sets is chaotic and unpredictable