I guess when he is talking about the superior sound quality of the Argon over the WiiM, he is discussing his (subjective) impression on the analog output, but he is not extending that opinion to the bit perfect digital output.Darko compares another wireless streamer to WiiM Mini
Has digital coax output and Chromecast built-in up to 24/96k
In any case, personally I have zero interest in Air Play 2 and Spotify Connect. However, not having Qobuz integrated, Tidal Connect or Amazon HD, is a no no from my side.