These lawsuits are about punishing Exxon for selling a legal product, under the pretext of protecting investors. Quoting the article:

“The office of the Attorney General failed to prove, by a preponderance of the evidence, that ExxonMobil made any material misstatements or omissions about its practices and procedures that misled any reasonable investor,” Ostrager wrote in a 55-page ruling. James “produced no testimony either from any investor who claimed to have been misled by any disclosure,” while the company disclosed its use of both the proxy cost and the greenhouse gas metrics no later than 2014, the judge said.