Fedora threatened with legal action from OBS Studio due to their Flatpak packaging
(www.gamingonlinux.com)
This seems to be blatant misinformation.
The default seems to require a gpg signature. It can be disabled for a remote with --no-gpg-verify, but the default for installing and building definitely requires a signature.
You keep talking about the docs, so please show me where is says that in the Flatpak Documentation.