Summarizing my experience: I have published a single article with the goal of better understanding the subjects and be able to correctly teach it (ofc a side income would be nice as well). Wanted to provide more value than what existed and posted in my own blog (powered by Telescope.ac), Substack, Medium, Dev.to and HackerNoon (sent for approval and got approved). Medium editors liked it and recommended it in the frontpage and their newsletters and "The Startup" magazine invited me to publish the story as theirs as well. And, as your belief, it suddenly "exploded": https://i.imgur.com/JHIoUIy.png

Too bad the post received a somewhat bad criticism and my moral went down to keep writing at the time. I will get back to it someday for sure.