Not at all, ever since Google launched in 1998, SEO has been evolving rapidly. At first it was a relatively simple process of adding keywords to an HTML page and inserting some code so that the search engines would know what your site is about; nowadays there are dozens of ways you can optimize for ranking on google's SERP (search engine result pages), with options like creating high-quality content or doing in-depth competitor research.
Since its conception, SEO has evolved rapidly as more people jump into this digital marketing game every year - making optimisation tactics as important as ever as standards are increased.