same here, but there is no real market for somebody to bother yet
and true in practice too. what you get out of an ai demuxer isn't an exact match for what went into the mix. it's a plausible approximation, much like ai upscalers, upsamplers, colorizers, and such.
That's a massive stretch.
They are able separate them sort of, but they are nowhere close the original quality of the individual tracks.