No, but Signal doesn't have to prove that centralised services can be successful: other services have already done that for them. At the same time, it has reac

No, but Signal doesn't have to prove that centralised services can be successful: other services have already done that for them. At the same time, it has reached far more regular users than Matrix has. I believe market penetration is at about 15% here in the Netherlands, which is a ways off from WhatsApp, but a pipe dream for Matrix.