Yes, in principle, I agree with your post.
If memory serves me correctly, Schulze made 3 video series: 1993 (while instructor at Christopher’s School), 1995-6 + manual with B___, and the last one in 1998. After viewing all 3, they tend to be similar in content but overall beneficial. So given the opportunity, watch any of the others. Found a 3(?) volume set in my parent’s belongings that the unspeakable Mr B sold to them by mail. But like so many others they did not put the message into practice. How did Schulze put it?... 85-90% who did the basics got well. Problem was only 10-15% tried it.
This brings up another issue: Many sites change content or disappear over time (true of even CZ). So if you feel it is valuable info don’t hesitate to save it for your future use.