But that anti-KKK stance is not as extreme as it could be. I'll give you an example of a more extreme stance: Every member should be tortured and executed, everyone who they were friends with should be imprisoned, everyone who mentions the name "KKK" should be imprisoned.
That is an extreme stance and it is ridicolous too. And in most (all?) cases, extremism also means authoritatian. Do you have an example for an extreme stance is any good?
By that definition, the purpose of a computer is to get hot. It of course does get hot, but a purpose is more than simply a side-effect.
Purpose, according to Cambridge Dictionary, is "why you do something or why something exist". A side-effect wouldn't pose any cause, therefore it's NOT its purpose.