QuoteThis means the OLED screen, despite the high color gamut (98.6 % P3) is not really suited for serious picture or video editing, because the colors just deviate too much and compromise the results.
You are misinterpreting the results a bit. The deviations that you see in your calibration SW only show up because -you- set it to compare with P3 gamut; but this notebook's display has a larger gamut - it exceeds P3 by quite a bit. So by doing this comparison, you get "deviations".
Now these "deviations" would be a problem in non color-managed applications (= most apps outside photoshop and alike), since all colors would appear over-saturated. But in software supporting ICC or 3DLUT calibration profiles (photoshop and alike, even some browsers) the display would show all P3 colors correctly, since it -has- the capability to display all P3 gamut colors (and then some).
So it is actually more suited to professional video/picture editing than to normal use.
Note: In my opinion I would prefer that any display on the market should rather match one of the standard gamuts exactly (P3, sRGB or Rec2020 gamut), than to exceed / be something in-between them, since then you cannot use such display without said calibration and color-managed (ICC/3DLUT) software (photoshop and alike). Unless you don't mind over-saturated colors.