Okay so for starters this article is clearly just a dig at Elon. If it wasn’t they would never have mentioned him but Elon makes headlines.
Second, I don’t buy it. We’re getting one side of the story here. They’ve been selling these cars by the millions for years at this point. If the cars were failing “while driving in the rain”, it would be a much bigger deal.
The " Elon Musk could buy everyone in the world a Tesla if he wanted to." line makes it clear that this is just more Elon/Tesla clickbait.