Changing info at the registrar would have fixed this, they would probably have only lasted a few minutes w/o DDOS but it's not like cloudflare singlehandedly banished them from the internet. I mean, they sort of did due to the lack of protection, but it's not like cloudflare has the keys to the entire internet; just their ddos service.

Sure, I'm not saying that they are the only people responsible. The thing is that everyone has the same mindset to the point where it seems almost like a coordinated effort. And Cloudflare's CEO admitted that the purpose behind their actions was to kick them off the internet.