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No, this has HDMI 2.0, which is sufficient because it’s only a 1440 display. HDMI 2.1 is for up to 4k at 120hz or 8k at 60hz with high dynamic range support. If you’re getting a 4k/8kdisplay, then absolutely make sure it has HDMI 2.1, but for this monitor, it’s not needed to use max spec capability of the monitor.
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To clarify the above answer, It only needs hdmi 2.0 because its 1440p 144hz. You would need hdmi 2.1 if it was 1440p 240hz(these are starting to come out now).