Codeigniter is SEO friendly or Not?

I believe SEO doesn't make as much sense as it once did. Google's supremacy is indisputable, around 65%, and the search results will always be in accordance with their interests.
There is an association, I assume, with Wikipedia, which I think is good, in every search where the result exists on Wikipedia, it will be the first one to be displayed and with a sidebar highlighted. From there, your GPS will determine the priority of the results.
I believe that the reliability and security of the site will determine, sooner or later, a better placement on the priority list. Credibility is important to Google's hegemony.