Balena Etcher should be avoided. See their policy about data collection..
Found this concerning, https://docs.balena.io/learn/more/collected-data/ Users are opt-in by default sending numerous info back to them.
Continuation of what issue #16381 had described before.
In meantime, you can add a note on the webpage about how it is better to install Tails image offline and or going in to settings of the app and opting out from this collection.