Yeti On The Lam!
Although to be fair, I thought the implication there was that Ronan got the go-ahead to bomb the populace out of existence because Yon-Rogg's mission failed and they couldn't guarantee a surgical strike against just the Skrulls. That was the information they'd been hoping to get from the spy.Who then by all accounts were bombed out of existence bu Accusers (IIRC Ronan say so after accusing Yon-Rogg of failing the mission).
I think this was avoiding complication rather actual concern for any natives encountered.
The early part of the film seemed like it was designed to create a dichotomy between the good Kree and the bad Kree; this would probably work for people who saw Guardians of the Galaxy but weren't big comics fans.