You can automate a lot of it. But it should be operated with precaution. With your eyes and consideration because full-automation on all things SEO would result in harming your website if you don’t know how to operate with it.
Now if we are talking about content and on-page. It is possible to automate a lot of it, But remember the old saying GIGO. You can automate the TASKS but you must have a clear understanding of what you want to happen.
If you are asking ‘can I add a list of keywords to a plugin and hit ‘optimize’ and all will be done, then the answer is no.
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