Also, it's a tricky environment of disinformation generally, and in particular for anything valuable like Signal. If Signal is secure, attackers on privacy would want people to believe Signal is compromised and to use something else. If it's not, then they would want people to believe Signal is secure.
I think the solution is to completely ignore any potential disinfo source, especially random people on social media (including HN). It's hard to do when that's where the social center is - you have to exclude yourself. Restrict yourself to legitimate, trusted voices.
I would also read it from another perspective. Attackers, especially at the level of nation states, will always try to get as many avenues for achieving their goals as possible.
If you have compromised a service, it would be in your interest to make it more popular (assuming you think you are the only one in possession of it).
If you cannot, you don't give up; you just go back to the drawing board (https://xkcd.com/538/). Maybe I don't need to break Signal if I can just rely on phishing or scare tactics to get what I want.