What is the technical protection that X ISP DNS provides that is different from Cloudflare DNS?
When you mention censoring, are you referring to the act of monitoring your online activities or blocking specific content?
If you mean monitoring your online activities, that’s why we would want to use ECH. Even without ECH, both X ISP DNS and Cloudflare DNS have the capability to see and log what you are doing.
As for blocking access to specific websites, I’m not sure if Cloudflare DNS blocks any access to particular sites (unless someone is using the family Cloudflare DNS, which blocks adult content, but that’s not the case here).