[vdaniuk]

Ugh. Someone is wrong on the internet and I just can't ignore that.

SEO doesn't create value for the society? That is an extremely bold claim. Guest posts, infographics and other form of viral content are a very common tools for so these days. They create immense value for content consumers and that's the point. SEO is very much white hat these days in the anglosphere due to superior Google search spam detection algorithms. There are black hats, of course but they are not a defining market force for a long time already.