This attitude does not support productivity or learning. Tutorials sometimes can be a simple series of steps to follow that avoid actually teaching concepts in depth but they are useful for two reasons:
1. Often, you only want to do something once, and don't care about learning all the details. In our modern lives, we do so many different complex tasks that saving our time and minds for the focus of our work is essential for efficiency.
2. A collection of weak tutorials, or even just one are better than nothing. Even if the tutorial doesn't directly explain advanced topics, reading between the lines on a few simple tutorials is vastly better than having no where to start.
These simple tutorials are huge wins for everyone's productivity, as millions of people learn to do the same task every day, you might be able to benefit from their notes more than you think