There should be consequences for the people who publish these things. People have a tendency to believe anything that someone in a lab coat says, especially if it supports their point of view or anecdotal experience. In many cases the people who do the research present it with few qualifications while not standing behind assumed implications. If someone publishes sensational and link baity findings they should say, unequivocally, "I'm willing to stake my reputation on the idea this trend is real and will continue" or "These are just data and I'm not willing to say that they have any bearing on reality".
Facebook may not have been right to dignify the initial post with a response, but I hope it works for the best. They say that some attention is better than no attention at all. It's important that this applies to self promotion and persona creation and not science. If somebody has something crazy to say, they should start a personal blog. Those who want to intentionally attract media attention should present themselves as such, instead of pretending to be doing any kind of meaningful experiment and hypothesis testing.