Meth is a product that was found, and then developed and improved in order to be better at what it does. The expertise demonstrated in the creation of Meth shouldn't be compared to Facebook, which is just the first product to come out of a market. Facebook hasn't developed further as a social media platform, it has developed further as a money making device.

You could say Alcohol is the Facebook of drugs. Drugs have developed over a very long time unlike social media, so the history is much greater for this case, but the point is that alcohol, despite not being the best in all categories, is the most popular drug simply because it's not as harmful as others (such as meth) and has been around for longer than the new, less risky alternatives (such as weed). I'm not considering coffee as a drug for this metaphor. Alcohol is making the most money not because it is good, but because the rest is mostly illegal, and/or less ingrained in social norms and traditions.

Point is, I kind of lost myself along the way and started rambling, comparing Facebook to Meth is not fair because Meth is not socially accepted while Facebook is, maybe compare Reddit to Meth, idk