IMO, charging a course is still acceptable in the modern context as it consumes the teacher's time.
However, if the course is not as advertised then its different story.
Paying for 5 yrs and nothing has ever happened = SCAM as many like this around.
or have only little benefits that not correspond to what the course meant to be.
(i.e. NEIDAN)
You can see the conversation between OPENDAO and shadowself in relation to this particular NEIDAN course.
Thats why we need a forum like this that sharing some point of view especially from someone that has been in a course.
