A few months back Firefox announced it was finally adding support for Progressive Web Apps (PWAs) after years of ignoring its own user's requests to do
I wouldn’t say they’re lazy. Quite the opposite in fact. They’re just so under-resourced compared to Chrome, which has the benefit of a massive for-profit company backing it, in addition to a much larger range of third-party contributors (from Edge, Brave, Vivaldi, Opera, and more). They struggle to keep up with the fast pace at which web standards evolve.
I wouldn’t say they’re lazy. Quite the opposite in fact. They’re just so under-resourced compared to Chrome, which has the benefit of a massive for-profit company backing it, in addition to a much larger range of third-party contributors (from Edge, Brave, Vivaldi, Opera, and more). They struggle to keep up with the fast pace at which web standards evolve.