This is called black and white thinking and it's generally a intellectual dead end. Applying wanton black and white thinking is a sign of a mind incapable of nuance, and rich, deep thought.
Can't think of one instance where a group was able to politically accomplish something on the basis of "nuance"
If someone is making an appeal to "nuance", they're losing
This is the political version of claiming, "I don't know how to sew and I've never seen someone sew. Therefore sewing is impossible." It's stunningly wrong. I can't seriously believe someone would think this way.
Exactly. This is why I've spent the last ten years of my life trying to find a real unicorn in nature. Weakly held beliefs are never good enough for me!