Did that post I made a week ago trigger the idea of this thread ?
Short answer Yes. My LG E6 does NOT have dynamic tonemapping, and to be honest, the difference between HDR10 and Dolby Vision is bigger than that between a normal blu ray disc and a 4k disc. Dolby vision looks incredible on it, while HDR10 looks barely improved.
Long answer
It's frustrating to be actively prevented you from accessing the best picture quality in their movies. If you buy the disc you get the better bitrate but the inferior HDR format which means a much less vibrant picture. If you steam, you get the superior HDR format and the inferior bitrate which means less details in the picture. 4k UHD discs are expensive and when you pay for a movie on a disc in this day and age, you, should get access to the best version of the film possible on that disc. Especially with a self branded premium format. For anyone who doesn't know the picture, HDR10 is a flat 10 bit colors(more than a billion) which tonemaps the entire movie from one picture. Some modern tv's (not mine) can sort of get around it with built in software, but it doesn't 100 percent fix the issue. Dolby Vision has 12bit colors(more than 68 billion) which it then downscales to the 10bit panel and can have different tonemapping for every frame in the film. This essentially means that if you have a movie with drastically differently lit scenes (like both night and day) you're going to have to choose one, or a middle ground with HDR 10, while Dolby Vision allows you to tonemap each perfectly, leading to a much more vibrant picture. It's a huuge difference in picture quality on my tv.
They did release 2 films on dolby vision. The Last Jedi and Black Panther but then they went away from it again with all subsequent releases. Presumably because someone realised they would be making disney+ and could be able to get people to double dip.
It's just a shame because they make some great movies but at least for me, they make the choice between the 3D disc version and the 4k disc version really easy.