Sorry, but I don't buy any of that. I've been defending Mozilla for years, but enough's enough.
> but all existing Firefox users would have to download a second Firefox browser app, probably sync their accounts if they want to keep their data, and then remove the old one manually. You'd end with a Google Meet/Microsoft Teams situation (where one app is labeled "new" and it confuses the hell out of everyone)
You're making it sound like a problem, but those actions are trivial. You tell someone who's dying for a non-webkit browser on iOS "well okay, but you know you'll have to download another browser! And even sign-in again!". You really think they care?
> Furthermore, developers cannot actually use the released app they've made if they're in the US, where a lot of Firefox devs are.
They absolutely can, because they're free to install development builds, which is what they should be testing anyway. Regardless, if development starts migrating slowly to the EU, that's a natural consequence.
> Then there's the (what I can only presume to be illegal) Apple Tax you need to pay to distribute an app outside of the app store
This is the only real issue, but even then I'd say Mozilla should take the money they're spending on their current nonsense and spend it here instead. "Our mission is to ensure the Internet is a global public resource, open and accessible to all". Really? Prove it. Furthermore, if we role over on this because of the obviously anticompetitive malicious complience Apple is showing, they win. This is the first step to getting them to remove that fee.