That won't have been the reason the drone crashed.
His recorded flight data might show what actually caused the incident.
Using rice is much less effective that rinsing with alcohol and letting the drone air dry.
Tons of people have no idea what happened to this drone or their own drone.
It's easy to say the same thing happened to mine when you don't know what happened in either case.
I wouldn't have much faith in Youtube comments, but a few of the brief...
The video guy doesn't mention this.
Where did this idea come from?
It's can be confusing trying to make sense of a crash incident from a screen recording and the recorded flight data would make it a lot easier to tell what happened.
If a prop is...
I haven't tried it, but the workaround involves using Litchi as explained in this video>
There are quite a few more out there if you search for Litchi drone mapping.