Sony considers that model their top of their line. They consider it Grade 1. They replaced their top of the line OLED monitor with that LCD model. Maybe you can convince Sony engineering otherwise.
As I said before, most professional reference monitors on the market are LCD.
What you don't understand is that it is not necessarily better for 99.9% of production work. That LCD is only for those that want to try mastering for a possible future HDR consumer technology, which may never come along. Displaying extreme high nits has to be used in very very limited scenarios, such as a quick flash of light. Most producers aren't keen on huge lighting differences because it is too distracting. Even if it's in the metadata, a TV isn't going to use it, as it would just create a very blown out image or the tone mapping would be so far off it would look ridiculous.
What most people don't realize is HDR maintains the limit for diffuse white, such as a white wall at 100 nits.
Above 100 nits is restricted to highlights.
The Sony OLED is true RGB and not WRGB found in consumer OLED's. WRGB found in consumer OLED's use white to increase brightness at the expense of color accuracy.
The Sony on the other hand is far more accurate, more so than any LCD or OLED. It can display white along with extremely bright color rich content without any fading of color from the white light. It has 21 stops, which is more than current cameras can capture.
The Sony LCD can get brighter, but it can't do what their OLED does for darks. It's two different instruments for different content. This doesn't make one better than the other.
Studios will do multiple masterings for different segments, Rec 2020 or DCI-P3, different tone and grey mapping, but OLED is still the most used because of the dynamic range in the lower end (which is so much higher than any LCD) and the accuracy at pixel level. This makes their job easier and is it is far more beneficial for not only what movie theaters can show, but what consumers are able to view. Recommendations from studios is only 400 nits max. The 1000 nits you see mentioned is for max subpixel lighting.
Higher brightness (or nits) does not mean better. Higher dynamic range does not mean better (especially if you can't display blacks and gradients correctly). If you have 10,000 nit master and show it on a 1000 nit display, do you know what happens? You should look it up before you decide one technology is better than the other.
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