Jeff, a word to the wise... check the follower count + revenue of anyone you take business advice with! There are lots of people out there giving advice, not many taking it
Also, check their portfolio. That other dude who you mentioned writes almost exclusively about how to succeed on Medium, but as far as I can tell, has no portfolio of successful articles and experience on which he is basing this advice, which leads me to think he doesn't really know what he's talking about.
It's really common, on Medium and in real life, for novice entrepreneurs to get into the advice-giving market because they think it's profitable.
You can even apply that advice to me! I talk about how to succeed here, but there are plenty of fish who are much larger than me too. We've both got to find the experts and learn from them directly.