This from 2023 seems ungood for static xterm placement:
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Do I need to worry about burn-in with OLED?
You don't particularly need to worry, as it largely happens only when displaying a static image or sequence on repeat, as with a display unit in a showroom or retail store. You should get several years warranty, anyhow, and we don't see many home cinema fans using their OLED TV in this way.
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