Can UXP/CEP be installed from the Creative Cloud app?

When listing a CEP on the Marketplace, it’s necessary to fill out the Where to find it field.

I used to prefer writing that it could be installed via the Creative Cloud desktop app, but it now seems only the management of already installed UXP/CEP is possible.

The documentation doesn’t explicitly state that it’s impossible, but where can clear guidance be found regarding whether installation is possible or not? Is there anyone who can clarify whether this is possible or not?

https://helpx.adobe.com/creative-cloud/apps/integration-with-other-apps/manage-plugins/install-plugins-extensions-using-creative-cloud-desktop-app.html