It's pretty clear that the goal of these lawsuits is not to recoup losses, but instead to silence critics, and to attack someone that alledgedly "betrayed" Tesla.
This is not normal corporate behavior. Normal companies don't try to swat their ex-employees. Normal companies don't start lawsuits on the whim of their CEO.
Normal companies either don't talk at all about employees that make crazy allegations, or they make a press release thanking the whistleblower, stating that they investigated the allegations and determined that there are no problems and everything is fine!
Like the biology of a crocodile, this is the natural behaviour of a capitalist corporate entity under current US law. We have this set of incentives for corporations and we’re all surprised when they follow them to the letter.