Sounds like you're the expert.
Now instead of suggesting things that might cause the issue you are concerned about, get the recorded flight data from some of these mystery crashes over water and find out what actually happened to cause the incidents.
So yeah ... you are just repeating the BS myths that you've heard and thus perpetuating them.
That has nothing to do with your drones-crash-over-water-mystery.
It's about obstacle avoidance might have troubles under certain circumstances.
For no reason?
How do you know this .. or is it just what you've heard people say?
This is like going down to the boat harbour and telling yacht owners that if they sail out to the horizon, they risk falling off the edge of the earth.
I think...
DJI have been providing Android versions of their apps since at least the days of the Phantom 2 series, well before they had controllers with integrated screens.
I've been flying since then, always with Android devices.
It sounds like confusion caused by this note that DJI put up a few months ago, causing folks to mistakenly believe that DJI Fly won't work on tablets any more.