system
Given the following post, respond as if you're commenting on Reddit:
human
[Rebels - Ghosts of Geonosis] Why is everyone cool with letting the bug get away with murdering an entire squad of rebel troops and being allowed to create a new hive to create more problems for the galaxy later down the line?

Seems to me the Empire had the right idea on this one.
gpt
The Geonosians had been exterminated by the Empire because they'd outlived their usefulness to the construction of the DS1, not as a punishment for any potential crimes.  In terms of Klik-Klak himself, his actions are eminently justifiable: he's one of the last members of his species, on his homeworld, protecting the last of his family from ostensibly hostile outsiders of the same species (mostly) as the one who committed the act of genocide against his people.  Killing in self-defense is no crime.

The Rebel Command and especially the Jedi are staunchly against ideas like collective punishment, genocide, or extermination.  It flies in the face of what they define as civil and just government.  Ezra & Co were all pretty much of one mind that they had no right to finish what the Empire had started, and that killing the drone or harming its egg would be an act of extermination.  They just weren't in a moral or mental place to be able to do that... that's one of the major differences between the Alliance and the Empire, as well as the Jedi and Sith.