I have noticed too that the default settings give you the best Image. After my first flight I used d-log and i was never able to get a as clear picture as on the first flight. Only question now...which are the default settings?
Interesting link! I too used the DJI log colour profile and the softening on the sharpness and have recently been wondering whether this was the best setting… Looking at foliage from a height, all seems to be very mushy (no detail). I have another film coming up in the next few weeks so will try these 'close to default' settings as a test. I have always set white balance to 5600K (for shooting outdoors of course).