Wow. Until the present admin along with their huge tariff-fiasco, dji was gearing up for shipment of Mavic 4's to the US. I cannot see how you can even begin to think what you are thinking unless of course drugs and brainwashing were involved.
You don't have a theory ... you have guesses that are only supported by the number of other people repeating the same guesses.
It's easy to imagine wild guesses explain an unproven large number of alleged mystery crashes over water when you don't...
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...