I try to CW the fuck out of everything. I'm open to learning new reasons to CW. But I can't be entirely apolitical anywhere, online or irl. What's happening in the world is affecting me directly, people I love directly, and all my fellow earthlings.
CWs are a fair compromise everyone should adopt. If you're in a semi public place where strangers can hear you, you're probably not gonna loudly announce some horror of horrors you just heard about, shouting gory details in their faces. You'll probably make a quiet segue to only involve to those who seem interested, and a CW isn't much different.