In the documentation https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Guides/Installing mozilla says you need to install this extension.
https://addons.mozilla.org/en-US/firefox/addon/pwas-for-firefox/
However it says the extension is not actively monitored. Is this feature supported by firefox or not? It seems tacked on and unsupported.
Oh ok that makes more sense. Thank you