I have a B7 and don’t notice any of the issues mentioned myself. The picture quality is so much better than any LCD I’ve seen. They are pricey though and I’m annoyed that LG won’t update the software on older sets for Airplay 2. I think when you are spending this much you would be expecting to keep it many years. I’ll end up rectifying things with a box/smart device at some point I suppose but my issue is with LG not OLED as a technology.
Watch 1917 for some of the panning shots. Its a real stress test for OLED panels and ilicits the 24fps stutter on panning shots.
I haven't really noticed it on many other forms of TV other than a few episodes of Mr Robot.
LCDs do well to mask it with the inherent slower response of the panel, so it has a natural blacksmear/motion trail. OLEDs don't as everything happens instantly.
The only technology I know of which handles these scenes fairly flawessly is projection (but even then, I saw my old Epson 9400 struggle in a few instances; namely Anime which probably had the judder baked in).