I can tell you now that DJI have altered the wording of the manual. I’m one of those sad muppets that downloads documents and reads them so I have a copy of the original manual. It states
The current version on the Internet omits the line about...
It's just more mush like everything else you post here.
There's nothing anyone can see except a bright light against a dark background.
I guess that proves that your country is being invaded by space aliens?