“Both-sides” and when is nuance acceptable discourse?

I feel like some sort of alien asking this question but there is this negative connotation I keep seeing towards acknowledging “both sides” of an argument. Now, I know that things that have racism, sexism, and violence on one side and do not have such abhorrent views on the other clearly have a “good” side, but I also get the sneaking suspicion that calling something “both-sidesy” in a context where there are not such clear boundaries is a potential manipulation tactic to dismiss nuanced arguments. Does anyone have any thoughts on this? Is my dividing line correct or are there other things to consider?