That's just a bold faced lie.
That twitter account is just some dude, not Tesla.
Furthermore it's not some staged ad.
It really happened. A Chinese Tesla owner was able to drive through dangerous flooded waters, happened to record it and posted it on social media.
Then someone re-tweeted it.
What exactly do you object to in that sequence of events?
More distressing is the above commenter described a nightmare scenario which went unaddressed. I guess that's your right. I wonder what you think about that part of their comment and whether it is "believable" or not. I find many aspects of messaging coming from Tesla, either the company itself or supporters, as unbelievable.
“If curious abt TSWLM car, am still planning to do a sports sub car that can drive on roads. Just a side project. Limited market potential :)“ Musk, 10:29 am 6/19/16 The spy that shagged me car which is a reference to a amphibious car. There is more in this article too.
https://www.theverge.com/2016/6/20/11975452/tesla-model-s-fl...
> Your Tesla can function as a boat for brief periods of time
https://mobile.twitter.com/elonmusk/status/10685821263065825...