I lost four spokes on my morning commute when the chain decided to jump off the big cog. Of course I don’t have a spoke protector. (Who needs a dork disc? Bad things won’t happen if you keep your bike maintained. /s) I was lucky to skid to a stop rather than crash when the rear wheel locked up.
PSA: keep a few zip ties in your repair kit.
I’ve seen what a splintered carbon arrow can do, and for a very short moment I thought the image was actually showing something like that. Still sucks, though.