SEO has evolved however much of the published SEO advice is stuck in the past. People are proclaiming "SEO is dead"... that will only be true the day people stop using search engines to find information, more like "SEO has changed". There's a new SEO in town. What exactly is the new SEO you ask?
Check out my full answer here: https://medium.com/on-startups/f15264e5d790