Warp will allow a user to connect to a VPN endpoint at the POP closest to them. It will not hide the user’s IP address, nor will it allow a user to connect to a POP in an alternate geo to bypass/circumvent content restrictions by private entities or governmental controls.
The scenario described above is Domain Fronting, which Cloudflare does not support except in limited scenarios for Enterprise customers to other domains they control and manage (and if they attempt to abuse that they are subject to termination for violation of our ToS). Using Workers it is not possible to change the host headers being sent in order to prevent just this type of activity. Whatever governmental controls are put in place to block specific content in their country/region are the business of that government and the citizens therein. Cloudflare provides DDoS mitigation and security services to prevent a bad actor (state or otherwise) from knocking a site offline, not to provide an avenue to bypass content controls.