I noticed #Quad9 #DNScrypt servers haven't upgraded yet to #XChaCha20 from #XSalsa20. I'm getting warnings, though I don't think it's actually an issue. I wondered if there's any identifying value to it, but that algorithm indicator is actually part of the cert construction and not the client-server communication. I wonder if there's any benefit other than: algo improvements (diffusion; wikipedia), and standardization.