"If a government decides they want you offline" is quite a big difference from the original "Once you get kicked off Cloudfare, thats mostly it for you".
Centralized DDOS protection and DDOS seem to be two sides of the same coin, so i dont understand what the distinction would entail.
edit: You could argue that DDOS is an equal opportunity tool, while the threat of getting kicked off cloudflare is reserved for a selected few. So the difference would be which is more at threat of getting exploited. Hope that helps.