Even if everything eventually starts working smoothly, I still can’t imagine convincing my friends to install at least two apps just to deal with a signer.

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I also left a comment there — beyond privacy and the risk of state attacks, there's one more thing worth weighing, and it's why I voted no: scalability, or maybe more precisely how easy it is to build a layer 2. It isn't mathematically proven, but looking at the tech we have so far, getting scalability, ownership and privacy all at once looks impossible. And if we have to give up one of the three, it should be the last one. Because privacy can be recovered at a higher layer

alby hub?