Is there any evidence indicating that the skim is intended to prevent system overload, rather than simply allowing Marriott to rent out the 6% left on the table? My understanding is that the Abound inventory is entirely based on weeks as Marriott conveys weeks to the trust, which are then converted into points for sale. Similarly, the exchange inventory is also based on weeks. I am not quite sure I understand the point.
As I mention before, HGVC and VSN have functioned well without a skim and this should not come as a surprise. An argument can be made that without the skim, the inventory should be more abundant. This is because more week owners would feel incentivized to deposit more often as they receive greater value, instead of primarily booking their own weeks.
Possibly questions about the skim were commonly raised during sales meetings when you worked there, and salespeople crafted talking points to address these concerns. To me, there is nothing to suggest that the talking points regarding the skim are true.