I've never written code, but I just passed a Google system design interview

that seems a little disingenuous. accurate, but borderline lying by omission. yes yes, someone could just, you know, read the article. totally get that you’d rather that. anyway, from the author:

> Then moved into career coaching and salary negotiation before I got where I am now: creating content for engineers.

creating content for engineers. and the founder of the site being linked to is adding context for the author, just as was done on the post.

the post is, of course, an advertisement.

this is fine. but when your site is for anonymous mock interviews, and the post is about passing a mock interview, it stops being so gosh golly gee shocking that your poster passed your test without being “qualified.”