Different people have different approaches. This definitely cannot be considered a scam, it's considered as ineffective for your attributes..
There are hundreds of online courses that helped students in achieving high grades in the US, especially in the Advanced Placement or Honors classes, and this approach is trying to break its way into Malaysia. Though its ineffective now, I salute them for even try to introduce non traditional teaching method, though their price is definitely considered scamming looking at the manifesto they promised.
However, TS had mentioned of the grade inflation. If this online course really helps an ace, then this version of inflation is the upside version, as opposed to the grade inflation due to low standards.

The Score A programme is definitely legal, not a scam and it's endorsed. I would really advice other not to exaggerate its failure or ineffectiveness by using the word scam. You are misusing that word and confusing the TS of his question.
It is not a scam, but it is not worth either. I would suggest you to opt from it. There's not much benefits to earn from it.