Even in states which have anti-SLAPP laws, they target frivolous lawsuits to deter speaking out. If you really do have a case, but part of your motivation for bringing it is to deter future misconduct, that's perfectly kosher.

The whole point of the Anti-SLAPP statutes is to discourage companies from using lawsuits to "deter future misconduct." It provides, at a minimum, that the company pay all the defendant's legal costs and the complete dismissal of the company's case with prejudice (which usually means all of the related claims filed in the same lawsuit, though on rare occasions the company may be allowed to split off those claims into a separate case).

Unless Tesla has been concealing some facts in its court filings, they don't have prima facie evidence of all elements of their claims. Anti-SLAPP motions can precede the discovery phase, i.e., before Tesla can acquire that evidence. Moreover, unlike TV, such evidence must be presented in court filings. Ambush disclosures aren't a thing in real life.

This is not a frivolous lawsuit and is not without merit.