Is soundstage just a distortion?

Years back when I bought a Shure V15 Type 3 and then later when I bought a V15 Type 5 Shure would send you their test records (still have mine). I also found the easiest test to be the channel phasing test. In phase yielded a solid center image but one channel out of phase yielded a mess, but usually decidedly way off center image.

This got me thinking of the difference between analog and digital. At its best (in my home) I am able to get a wider soundstage out of analog as compared to digital. Which got me thinking- is a wide soundstage, one that extends beyond speakers, just an artifact of phase distortion (and phase distortion is something that phono cartridges can be prone to)? If this is the case, well, it can be a pleasing distortion.