Looks like a bunch of people who don’t have any information speculating about something which they have no prior experience with (new body construction style) and reporter’s reporting it as some how news worthy to get a sensational article.
Every Tesla made to date has been safer than the last and they are all rated as safer than any other car you can buy. There is no reason to believe they would abandon that world class safety goal with this product. I would be surprised if at minimum this didn’t turn out to be the highest rated vehicle in its class for safety when the official crash tests are published.