I agree. Best to mitigate any variable we do have control over but to me, the single biggest variable on POI when shooting at distance is wind. And this is not something we can measure accurately like we can temperature, pressure, altitude or distance.
We know what it is doing where we are (we can measure it there) and we can judge fairly accurately what it is doing at out target through environmental factors (trees/grasses blowing etc) but we can only guess what it is doing in between us and our target. Also wind is three dimensional. Not only does it blow from side to side, it blows up and down, and towards and away from us.
Imagine shooting across a gully with a steady 15kph wind from left to right. We allow for that but there may well be a 3kph overall up draft and a 5kph tail wind in the middle of the valley we are not aware of so can make no allowance for. Both will have a bigger effect on POI than a moderate change in air pressure.
Having done a bit of flying @
R93 you will be well aware of the surprises and unpredictability of the wind in the mountains. It is a very rare day when there is no air movement at all.