OLED is different from usual LED expectations, the contrast tending to inf. helps a lot in not needing excessive brightness to produces a quality image.
LG does have a common issue with black crush which can be resolved via 1-15% range being raised a little, if you get it calibrated this isn't an issue.
As for the OP, generally the equivalent TV is a better option for value if at the same price, the only factor is if you absolutely need DisplayPort.
Also 1000+nit minimums being recommended is akin to asking for output as bright as a light bulb, it's really not necessary if the screen is your primary focus. Yes HDR highlights can be brighter but this should ideally be scaled to the device's range.
Please for brightly lit rooms it is far easier to reduce light noise than it is to get a device that can 'outshine' anything else without burning retinas. Turn off other lights, close curtains if you can. You aren't going to get a good picture regardless if the sun is beaming lumens in the 10,000's in/directly.