10 minutes to widespread organ failure is a bit short for the players to figure anything out.
How does a search engine being offline interrupt a device flashing?
It doesn’t though? IANAL but as far as I can tell you can fork, modify and redistribute it as long as you provide the source code to your users.
It’s AGPL-3.0 so… https://www.tldrlegal.com/license/gnu-affero-general-public-license-v3-agpl-3-0
For now
That’s not Firefox forcing you to update, you had Firefox open while you (/your package manager) was updating Firefox and after the update was done Firefox needs to be reopened. To prevent this you just have to …not update Firefox while it is running.
Reading the comments under it is funny, they biased the testing environment extremely so I don’t expect much of any big improvements from this.