Not everyone owns a 4K TV or a powerful graphics card. 720p content plays smoothly on decade-old laptops, Raspberry Pi media centers, and non-smart TVs connected to streaming sticks. The 10-bit encoding might still be decoded in software if hardware acceleration is absent, but modern CPUs handle it without issue. Information on in your region
In an era of 8K TVs and IMAX-exclusive aspect ratios, why download a 720p WEB-DL? Raspberry Pi media centers