Acer and Samsung may claim to have produced DisplayHDR 2000 certified monitors, but VESA thinks otherwise. In fact, VESA has not even created a DisplayHDR 2000 tier and believes that both companies are acting deceptively.
https://www.notebookcheck.net/VESA-rebukes-Acer-and-Samsung-s-claims-of-producing-DisplayHDR-2000-certified-monitors.533606.0.html