https://wccftech.com/apple-music-lossless-wont-be-coming-to-the-homepod-and-homepod-mini/

You thought the fun stopped at AirPods Max? The HomePod and HomePod mini both will not get support for Apple Music lossless audio either.

So far it has become evident that none of Apple's headphones will be playing lossless Apple Music. But, it gets even worse - according to Apple itself in a statement to The Verge, the HomePod and HomePod mini will not get lossless audio support either. The interesting thing is, the HomePod (both of them) are completely capable of playing lossless audio, it is simply a choice which Apple made to not bring lossless to the speaker duo.