I agree with most of what you said Kajo, with one important nuance.
It's not because you Pay for ''professional'' lessons that you get the best training possible.
In fact, most schools/instructors I observe simply NEVER ask they students to activate systems while flying. Why ? Because it's time consuming and ''students just want to get on the board''
And guess what, even instructor training organizations are allowing this to happen.
This is taken from one my blog posts
http://kitebud.com/2016/12/11/how-good-were-your-lessons/
Christian