Yea. They don't really bother to take them down. Their logic is that the attack traffic isn't technically leaving via their network, so it's not their problem. Take a look at whois for the domains in that last forum link. Two of those domains are still pointed at cloudflare nameservers.

I'm sure there's tons more, but why bother compiling a list when nothing will change. If you're curious, a good place to look would be the hackforums 'DDOS as a service' section. I bet a lot of the active ones would go to cloudflare.