It was only answered appropriately if you ignore the context of the conversation which was a person comparing the two services by showing that they were both reverse proxies while discussing the privacy implications of Cloudflare's reverse proxy being proprietary and privately hosted.
The person they were replying to was suggesting that there is no difference between Cloudflare and Anubis because they're both reverse proxies. The fact that Cloudflare owns a bunch of infrastructure to mitigate DDoSs is irrelevant.