Their attorneys are a public interest law firm. Part of what they seem to do is stop false advertising and prevent fraudulent practices. Having briefly scanned the complaint, which asks for equitable relief and damages, my guess is that they want Barilla to be truthful in their advertising.
If you read the WSJ or a good financial section, you will get your answers. In addition, a google search will also give you your answers. In the case of Meta, their revenue dropped, which is somewhat attributable to competition with Tik Tok and their metaverse division is hemorrhaging money, and will continue to do so. When your revenue drops, Wall Street is not happy.
Unless you’re an investor this shouldn’t be cause for concern.