Yes, I am saying that perfect is the enemy of good enough. I think that if Signal were to keep chasing the complaining geeks, it would cease to be good enough. In the sense that it would be far less widely used, and thus not raise the privacy bar of society even a little bit. Which is why I advocate for not worrying about the complaints too much, i.e. to not let perfect be the enemy of good.

(Obviously there's always room for improvement, but even if there wasn't, the complaining still wouldn't stop.)