Having lossless copies is still useful for storage and later transcoding. Even if you can't hear a difference between a 192kbit/s MP3 and a higher bitrate lossless file, you might be able to hear one after reencoding the MP3 using another lossy format.
Considering the proliferation of music remixing social media services (i.e. Tiktok) and the cheap price of storage, maybe even casual users can benefit from lossless these days.
Having lossless copies is still useful for storage and later transcoding. Even if you can't hear a difference between a 192kbit/s MP3 and a higher bitrate lossless file, you might be able to hear one after reencoding the MP3 using another lossy format.