Hey Javier,
First of all, I don't think this was a bait and switch article. If it is, it's not intentionally made to be.
I've updated the article with the following youtube video to provide a more in depth expansion of the content:
https://youtu.be/xmEfyEE8TCQ?si=T4Ujq5EGcNTy3H5-
Additionally, I don't think it's a bad thing to promote my course, but I will not share all the exact details on how I got there as it's not fair for my paying students.
I appreciate your feedback, and I hope you have a good rest of your day.