If i understand it correctly they scripted the cleaning and rebuild the package of every release of chromium, here is their documentation on how they do it:
https://github.com/Eloston/ungoogled-chromium/blob/master/DESIGN.md

well there was supposed to be here but it appears their links are broken
https://gnome15.org/downloads/source/

The actual advantage of using the pre-configured tor browser is that most users are supposed to use the exact same config to avoid fingerprinting deanonymization.

Budgie related issues are reported on Github page of the project.
https://github.com/solus-project/budgie-desktop/issues

It got fixed in unstable.

budgie related issues are reported here:
https://github.com/solus-project/budgie-desktop/issues

I thnink budgie bugs are supposed to be reported on github.
https://github.com/solus-project/budgie-desktop

I actually did it by accident, while i was playing around phabricator to learn it. I am sorry :(

I am not sure if gnome-multiwriter does validate the images after the burn, or if it can write sd cards.

Rambox is an equal opensource alternative. Much more trustworthy.