Earlier quoted context omitted.
The post that alerted AWS was submitted by HN user hapnin, who I don't believe has anything to do with Signal.
But he got thousands of people censored. I hope he's happy.
Google and Amazon should not only be supporting this practice, but celebrating it. Subverting an oppressive state is a moral good. Specifically cutting off anonymous, safe communication paths for those being oppressed is, to put it mildly, fucking evil.