My daughter loves to put a beautiful image on her iPad and make it stay like a picture frame for hours. She’s a kid, she doesn't care if pixels burn out, and if I try to prohibit it, it will just happen more often.
For me, OLED is better, sure.
I'm hoping we see major bumps to OLED on the desktops brightness over the next few generations of panel as it's still early days to be fair.
For now, it's likely ill keep both on my desk. OLED for darker tighters only supplying the occasional highlight, MiniLED for everything else including titles calling for large and sustained brightness values.
https://www.rtings.com/tv/reviews/best/bright-room
Anyway, if you have a big window in the room where your TV is, brightness probably should be the deciding factor.