This is a major plus. It helps eliminate "banding" in gradients (like the beautiful sunsets in Hawaii or Sicily), providing smoother color transitions than standard 8-bit files. x265/HEVC Codec:
If you are a legitimate owner of the series (Blu-ray or digital purchase), converting your own copy to these specs via HandBrake (selecting RF 22, Encoder x265 10-bit, resolution 720p) will yield identical results to the WEBRip. The White Lotus S01 S02 720p.10bit.WEBRip.x265