Those are certainly the issues I experienced with the 2020 13" Macbook Pro unfortunately. Everything here does seem to suggest an issue with the Intel display driver rather than the panel itself though it could be a combination of things causing it I guess?
I'm sure I saw this text issue even on my external display (when my 2020 13" MBP was connected) and I've never noticed issues with it previously on my Windows PC or my old 2016 12" Macbook. I think there's definitely something funny going on with Intel's recent display drivers and the screens on Macbook Pro's appear to accentuate whatever the issue is for many users.
Does anyone know if the 2020 Macbook Air 13" has this issue as the 2020 Macbook Pro 13" and 2019 Macbook Pro 16" both appear to?
It's not quite correct to attribute the issue to MBP 13'' 2020 or MBP 16''. This issue might appear on any model including older MBPs or other vendors (Windows based as well). These issues might appear on one MBP 16'' and don't appear on others. With the same SW and the same Intel drivers the second MBP 16'' worked fine for me.
Nobody yet complained about 2020 Macbook Air 13". It might be this is just a matter of time and there is still a low chance of someone getting the same issue with MBP Air too