OLED screens often exhibit poor text rendering.
I'm curious to see this in person. Looks like the "PROLED" is not using an RGB stripe layout.
Pixel density can reduce text fringing, but I have not seen a laptop OLED panel that renders text as well as an LCD yet.
It's got a very interesting pixel layout, different even from previous tandem OLEDs. Hard to describe quickly in words, but shown in Figure 2 here: https://www.apple.com/ca/macbook-pro/proled-xdr-display/pdf/... I imagine some of the C-shaped empty space is probably to accommodate the per-pixel emitter transistor.