I have an LG OLED and have never seen it go blank on any scene.
It just looks great all the time. Especially on scenes like you describe with a dark scene with bright highlights. Campfire scenes look great, space scenes look great. That's what OLED is best at.
If you're talking about ABL, I've only noticed the dimming on ads or powerpoint lectures that have fully white backgrounds, and I've been thankful for it at those times because I find all-white backgrounds too bright to watch anyway.
Except in scenes with fire (like a campfire) or where some spots may have high brightness compared to the surroundings. The LG OLED TVs I’ve seen all go blank in such scenes. The TVs I’ve seen that have LCD panels don’t have this issue. It seems like the only way to disable it (after turning off power saving and a few other things) is to buy and use a service remote to turn off ASBL. From my online reading, it seems like doing this may void the warranty and probably have negative effects on the life of the panel.