Equally, it might not be entirely right to say the app is "provided solely by its developer". Packages on Flathub are ideally maintained by the developers of the software, but not always.
We currently say apps are provided by their developers, but that's not precise; technically all we know is that an app is provided by the distributor/remote.
We currently say apps are provided by their developers, but that's not precise; technically all we know is that an app is provided by the distributor/remote.
See also: https://github.com/elementary/appcenter/issues/1132#issuecomment-550815517