I do think the gap between OLED and LCD has closed to the point where it comes down to personal choice.
The new Samsung Q90R QLED gets round most of the issues that LCD tech still had, it has good viewing angles, doesn't go too dark with its dimming in dark scenes and crush detail and black level is now at a level where it really isn't an issue.
I still think there are certain scenes were OLED still does what an LCD can never do, no matter how many backlight zones it has, but overall I'm pleased that LCD has got so good as I prefer the motion on LCD and more importantly I 'like' to have Sky News on all day, and with their stupid bright yellow ticker tape it wears the pixels in that area far quicker than elsewhere.
After 20 years with plasma and OLEDs I have only ever had a problem with Sky and their yellow ticker tape!!
I have been a gamer for years, I even left the Singstar logo on my Pioneer 500M Kuro for 12 hours to prove image burn is not an issue to the guys on AVforums, but OLED does not like yellow logos and banners, be careful!