To me it always seemed weird how saying "we should eradicate jews by our own hand" or "we should kill this jew" would probably not be okay because of inciting violence, but saying "we should eradicate jews... Through the law/state" instead is perfectly acceptable and not inciting violence.
Is one level of indirection really enough to make it okay? The end result is the same.
This is also why such free speech has problems. If you're the one spewing that shit it's all fine and dandy for you, but if you're the targeted minority what can you do, exactly? Certainly you cannot legally physically defend yourself! You're just destined to have to defend your literal existence with speech, like jeez. It's so lopsided.
The truth is, we do have enough resources. We just care more about the economy and profit than our future climate (which will also strongly affect the economy, but that's in the future so...).
If we actually valued the climate as much as we ought to, switching fully to renewables would be a bargain.