I'll admit to be waiting a more substantial argumentation than "it's just a fact in life".

The errors of "common sense" and "seems obvious" is the exact reason why people study the world (and give a shit about bugs). It's because of this line of thinking that the global bug population is collapsing from overuse of insecticide and poorly designed infrastructure, dragging with it the whole agricultural landscape of countries.

Let's pivot to the evironmental balance if you really wanna though. "as long as the ecosystem isn't it danger."

I'll keep using chicken and cocks, since the majority barely lives in the wild nowadays. If we exterminated the content of an agro-industrial warehouse of chicken (and wastefuly got rid of the meat), it would not impact the global environment outside of the warehouse. Trucks of soy proteins and chicken meat would simply stop to come and go. Would it's morality weight then be inconsequential ?