The wonderful thing about these sorts of lawsuits is discovery. These state governments have been able to collect damning evidence, despite employees generally knowing to be discreet in terms of what's saved in legal holds. I worked at Google when internal chats could be "off the record" but maybe that's not the case with FAANG any more?
The stuff about getting 13- and 14-year-olds hooked on your platforms: when you find yourself sounding just like someone at Big Tobacco, that's a big red flag.