Is an article without keywords indexed in search engines?

Question

Search Engine Optimization

Tell a newbie, an article without keywords will not be indexed in search engines? If so, why are simple, unoptimized articles still being sold on freelance exchanges?

Answer 1

Keys are just words
If there are no words, then there is nothing to index

Answer 2

will be indexed

Answer 3

The article will be indexed and ranked. Key requests and their presence have nothing to do with it. In any case, the article will be "about something." And this very object of narration will bring the article to the top. And whether this is an exact match with the request, or synonyms, or the essence - this is no longer so important, because robots, thanks to the "Korolev" (an algorithm for ranking texts according to semantic vectors), will understand what you wanted to say. Another thing is that the exact occurrence of the key can still speed up the process and help.