Mozilla is currently not investing in PWAs (2021)
github.com2024 update: "We are looking to make progress in this area soon"
https://connect.mozilla.org/t5/discussions/how-can-firefox-c...
Direct link to the comment on the thread:
https://github.com/mozilla/standards-positions/issues/340#is...
Would be nice if that comment stated its authority, or cited an official source.