> Now, there exists a minority of extremely technical computer user for which Signal is a nonstarter (because you need a smartphone and valid phone number to enroll in the first place).
> there presently isn’t really a good recommendation for private messaging that meets their constraints.<p>You don't need a phone number or a phone for <a href="https://haven.xx.network" rel="nofollow">https://haven.xx.network</a> and there are others.<p>If nothing is recommended, fine, but it's simplistic to not recommend or even consider the 3-4 apps that don't have those limitations. If you didn't have time to investigate or couldn't find anything else, say so.