[20] For purposes of determining whether a breach of duty was a «but for» cause of particular harm, there are no degrees of causation — specific conduct was either necessary for the harm to occur or it was not. (bc-injury-law.com)
Several people have drawn parallels between this decision and other, (generally conservative - leaning) decisions on voting rights and abortion rights, particularly in the consistent rejection of facial challenges and in requiring individual plaintiffs return later with more developed facts of particular harms. (prawfsblawg.blogs.com)
The negative videos don't seem to have done any particular harm and the publicity they generated may have drawn many more people to the site, where they'd be exposed to Chevy's branding. (epolitics.com)