You are right but it would have to be a fairly extreme situation for it to matter with that particular camera and sensor.
In the case of the
M2P you have a 1" sensor which even at F2.8 has the depth of field equivalent of F8 on a full frame camera just for an easy reference point. By F4 you have a full frame equivalent DOF of F11. In both cases, everything is going to pretty well be in focus under any typical flying situations. With such tiny sensors, DOF is generally far less of a concern, especially hundreds of feet in the air.
The 28mm equivalent lens on the
M2P is also rather wide, and a wide angle lens makes it easier to get an entire scene mostly in focus. Provided the subject size (i.e. occupies the same proportion of the frame) and aperture remain constant, all lenses actually have essentially the same depth of field. What changes is the distribution of that depth of field around the focal plane. At very wide angles, depth of field beings with around 30% of the image in front of the subject being in focus to 70% of the image behind the subject in focus - as you increase focal length, this trends ever closer to 50%/50%. Longer focal lengths also compress the image and enlarge the out of focus areas of the background, which is due to a change in magnification. There are several factors that come together which contribute to our perception of sharpness.
The bottom line is that a 1" sensor behind a 28mm equivalent lens is pretty much going to have everything in focus all the time even at F2.8 unless you're flying really close to something.