The problem you’re encountering is that every human defines evil differently. Those disagreeing with you seem to define evil to include “detrimental to civilized society”, which does at least come from an objective premise, even if you don’t agree with the assessment.
Through that lens, the good it does for people simply cannot outweigh the bad, because they believe the bad to include the end of society. That is what you’re arguing against, and why people with that view are so energized and are unmoved by the counter-arguments. If you want to change their minds, you would first have to convince them their premise is false, not just their conclusion.