[Regic]

> There were a lot of people who were just reciting the best practice rules they'd learned from blog posts, without really having the experience to know where the advice was coming from, or how best to apply it

This is exactly my experience too. Also, the problem with learning things from youtube and blogs is that whatever the author decides to cover is what we end up knowing, but they never intended to give a comprehensive lecture about these topics. The result is people who dogmatically apply some principles and entirely ignore others - neither of those really work. (I'm also guilty of this in ML topics.)