If you get your OLED TV professionally calibrated, or you follow the directives from say
www.rtings.com ...
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https://www.rtings.com/tv/learn/how-to-calibrate-your-tv
There is also a 4K Blu-ray disc you can use to calibrate it ...
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https://www.amazon.com/Spears-Munsil-Benchmark-Blu-ray-Disc/dp/B07Q2KBDKV
Your Brightness setting won't be max but right.
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http://spearsandmunsil.com/portfolio-item/getting-started-with-the-ultrahd-benchmark-3rd-edition/
If you have already a plasma TV (Kuro or Panasonic) and you have zero intention of benefitting from HDR10, Dolby Vision, 4K resolution, etc. for the next ten years say, keep watching DVDs and Blu-rays and 480p and 1080p content till the year say 2030 or before, 2025, and buy an 8K MicroLED TV without temporary or permanent burn-in effects.
In 2025 OLED 4K TVs should still be popular with the masses.
Life is very short, go OLED 4K now...Boxing week 2019.
If you are Canadian Best Buy warranty their LG OLED TVs against permanent burn-in. Canadians are covered here.
In the USA, or UK ask first, from where/who you want to deal with.
Sony I don't believe they cover it. This is the last stretch of this decade, the new one that we're just about to start LG OLED TVs will still be the best TVs to buy in 2020...I'm almost 100% certain. ...For performance/value ratio.
Plasma TVs (Kuro, Panasonic, Samsung, ...) they are from another era...a past era without today's advancements in picture quality, and features. The only thing (for me) that the best plasma TVs have from yesteryears is 3D support (and some older OLED 4K model TVs too...from 2016, and the last Sony 4K/3D LED TV from 2016-17). But I'm in the minority (1%).
There is much more awesomeness in an OLED TV than there is in any Plasma and LCD LED and QLED TV.
...With all the pros and cons from the video bible. IMHO
Reduced brightness setting to your eyes preference will surely mitigate your burn-in worries.
A darker room is OLED's best zone of comfort.
You don't seem to be the type of gentleman watching soap operas during daytime with all the windows and doors and skylights open...or outdoors around noon by the swimming pool.
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¤ The state of the TV affairs in 2020 ...
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https://www.whathifi.com/us/features/if-oled-has-reached-its-peak-whats-the-future-of-tv