613
Privacy is Priceless, but Signal is Expensive
(signal.org)
This is a most excellent place for technology news and articles.
And why wouldn't they? 90% of the software people use daily is free (as in beer), so of course being told that's going to change is going to cause upset. It takes a lot for people to want to pay money for something that, to those who don't value free (as in freedom) software, is no different than the costless alternative.