No Wide Gamut Issues

Introduced by marketologists as a picture quality improvement, wide color gamut turned out to be a real problem for many regular users.
The major part of photo/video content around us (90-95%) is standard gamut based.
Viewing standard gamut content on a WG monitor reveals color gamut mismatch that leads to oversaturated, unrealistic, "chemical" colors.
Color presentation works with numbers. The same number of color tone gradations (steps) is used for both standard and wide color gamut. Therefore each step in WG is wider than in standard gamut. While pure white and pure black are identical when a standard gamut image is presented on a WG monitor, everything in between is distorted.

Below:
A simplified diagram with an imaginary ruler and a real photos to illustrate WG color mismatch.

The NEC 2490WUXi is a standard gamut monitor that means no WG issues.