So, why dont smart TVs offer a DisplayPort instead? DisplayPort 2.1 supports 80 Gbps of bandwidth, while HDMI 2.1 offers only 48 Gbps. This means less compression and higher refresh rates for DisplayPort 2.1. However, HDMI 2.1 is still sufficient for most consumers. It delivers uncompressed audio at 4K resolution with a 120 Hz refresh rate, which is more than solid. You can daisy chain extra devices with DisplayPort, sure, but since the majority of smart TV enthusiasts may not care about this...
