I would like to promote the improvement of humans, but don’t slaughter monsters to do it. Though- when Kaala and Nyna talk about “monsters” they mean those generally capable of functioning in their society. Certain “monsters” are categorized as pests. Creatures not smart enough to maintain relations with other creatures or who have features that make them impossible to live with, and often are created through spawning rather than more- traditional methods. Also important to remember, to Kaala and Nyna they are monsters- but they aren’t “monsters” like IRL we refer to a horrible person as a monster because they are capable of doing monstrous things. Monster to them is the name their species are labeled as without the negative connotations.