I deleted an similar post because I felt it was a stub and cant edit after a long period.
Spotify is coming out with HiFi at CD quality later this year, as it shown here on their website. Strawberry seems more audiophile based, however if Spotify does HiFi it may give more reason to add support to Strawberry.
How has clementine done so and why isn't it possible to port that support to Strawberry? It sounds like one post alludes to the idea that Spotify has had to allow/get involved in helping to allow support? If so perhaps their launch of HiFi could give them reason to help add support for Strawberry?
Spotify is the most well supported music streamers in terms of external applications and phone apps, which makes an audiophile version very interesting. They seem to allow developers more access to api's than Qobuz too. I'm actually kinda confused by any difficulty adding it to Strawberry.