The removal of content keywords from the search console is due to it being confusing for users. From the Google official announcement of the removal of content keywords:
Quote:
...The words on your pages, the keywords if you will, are still important for Google's (and your users') understanding of your pages. While our systems have gotten better, they can't read your mind: be clear about what your site is about, and what you'd like to be found for. Tell visitors what makes your site, your products and services, special!...
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Saying goodbye to Content Keywords
November 29, 2016
So all they are doing is removing a feature from the Search Console, not eliminating anything from the process of search engine optimization.