>>718263570
In fact most people run their OLED display in sdr because they're stupid and devs are stupid, and Windows and console OSes are stupid and have an hard time doing the proper hand shake in some cases, which leads to many retarded users turning on HDR and they wonder why the colors are all washed out, and then call it a scam. But even when everything goes well, HDR tonemapping is a complete afterthought for most game devs so it's usually badly implemented.
Windows autoHDR and Nvidia's RTX can't fix them because it's post processing and not true hdr.

All in all and to also answer OP, no it's objectively not a scam, but it might not be worth the hassle for most people.