Excellent, and that’s what I’ve always been saying.
Everyone thinks about learning Power BI (or for example a programming language) by watching a video on Youtube, and doing exactly the same*.
They forget the most important, at least the vast majority - the importance of data modeling!
It is always where there is the most resistance, and some even think that it is not necessary to study.
They end up, sooner or later, realizing that they should have done this, as they cannot make logical connections or correlations between the data, for example.
Anyway, congratulations for raising this issue, it can help a lot those who are starting.
* Note: I am not against learning from examples - for me, is the best way to get better, and start. However, ALSO learning the fundamentals is essential.