What!?!?!
Hell no!!!
HDR covers wider range of color gamut. You are able to display colors that normal monitor isn't capable of.
Think of it like TN vs IPS screeen
Even that image and the widest triangle shows that the difference in color intensity becomes extremely hard to discern the further towards the edge you get.
A difference may be measurable, that still doesn't mean we can observe it ourselves in any regular content viewing setting.
It is quite similar with high fps gaming. At some point, the difference becomes so small but it is still measurable, and because it is measurable, people are convinced going ever higher is going to keep giving them more advantage and perceived smoothness. At some point, higher numbers just enter the realm of placebo effect, and for high FPS gaming, that exists above 144hz, for color reproduction, similarly, there are other panel qualities that are FAR more important for good color and contrast but those are too expensive to implement, so we're made to believe we need silly stuff like HDR even though the current color space covers almost everything we can see with the naked eye.
