The only advantage of SACD was that it was an early multichannel format. In terms of two channel performance it has zero advantages over CD.
Editing in DSD is so complicated and costly it is next to impossible. So fairly shortly everyone including one of the principle proponents BIS, converted to PCM and then back to DSD. As I think many of you know that DSD, and by extension, SACD was a totally bogus construct of audiophool mania, and based on totally bogus science, with zero advantage over PCM, in fact had significant shortcomings. It was a totally unnecessary development that actually set back the adoption of multichannel PCM. It did set back multichannel audio. If it had not happened there would have been multichannel audio only PCM discs aplenty.