Psiphon is a circumvention tool that helps users bypass internet censorship and access restricted content by routing traffic through secure proxy servers and VPN-like tunnels. “Psiphon key free” refers to ways users obtain free access to Psiphon’s services, including free app versions, freely shared configuration files or keys, and community-provided servers.
They simply renamed the existing free features. The urban legend persists because people want to believe they have found a "hack" for a service that requires no hacking in the first place. psiphon key free