@arstechnica because unsupported players no longer get new DRM keys as publishers rotate, nobody should use any Bluray player which doesn't have long term backing
That means the only good blueray player is a Playstation (a used PS4 should be a solid option for most, if you insist on physical) because Sony is one of the founding members for the blueray tech and the Playstation uses blueray discs, so it's getting reliable updates