There's e-mail for one. A great good everyone uses, which is definitely decentralised (much to the chagrin of a few large providers, which continuously act in bad faith to centralise it as much as they can). Signal could have been that, but for (mainly) mobile messaging. Because they went the jaded route as you do it's now just another way for one person to apply his dictatorial view to the masses. I agree with you that in a mountain of shit you won't really notice a little bit more shit, but that doesn't make it anything but shit. It could have been better, it is not. That's something that deserves a little lamenting.