As I mentioned in the other thread, Dish is either stripping the HDR data out of the 4K signal entirely or is doing an HDR -> SDR conversion. I will try what vipul128 has suggested, which if true implies that the HDR metadata is being stripped out but that the color space is incorrectly being flagged as BT.709 when it should be BT.2020. Again, assuming this is because the 4K Joey does not support HDR for whatever reason, and I guess maybe for people who had older/cheaper 4K TVs that don't support HDR (Hopper 3 can't do the conversion?)
Dish hypothetically has enough bandwidth to put on a 4K and a 4K HDR broadcast of the game, maybe they should consider that.