A lot of this tangles with moral purism as well. Simplified there are two groups of people: one accepts harm reduction (always chooses the Lesser Evil even though it is evil) and sees the actual real world consequences as the most important, and the other doesn't accept harm reduction and thinks keeping personal moral integrity is more important than anything else (refuses to choose even if that means the Greater Evil wins, as long as their own morals stay pure).

You can see this divide in many places, easy ones to spot online are vegans (both in-group and out-group fighting) and in lemmy for example the usaian debate between "voted against trump because the least amount of genocide" vs. "didn't vote to oppose Trump, because both candidates support genocide"