I think Dioxide45 hit the nail on the on the head with his comment.
I do not believe something nefarious will go on if it happens as others might. I on the other hand, read that Marriott was buying foreclosed weeks and said great. They just moved the burden of the uncollected MF into the trust and out from under a line item that I had to pay for in the operating budget. A made up example. A floating week offseason at the Heritage on HHI. MF 2500 that in default is costly. I am not sure how many offseason Heritage weeks Marriott has in the trust but I have a week during Christmas at the Heritage club for 1125 rented points. This is prime week in December, the best case scenario. @.60 a point it cost me $675 for a week in HHI and I got 10 rounds of golf plus cart. Heck, I will loose more than that in golf balls. The MF is about 2500. This is about $2 per point in the trust shared by all. If Marriott suspended buying foreclosed weeks for COVID and restarted it again in 2022, and they did this across the portfolio, it might help explain in part the 15% increase in the trust MF.
I do believe it can be a vicious cycle, higher MF's can cause more foreclosures that is a burden causing someone to absorb. As a non trust owner, I would rather it be to the trust. The MF of the trust will get high enough that it will impact sales. This will have Marriott rethink their foreclosure strategy. It will than burden deeded week owners. Not sure what the answer is but, I will continue to own my timeshares as long as it works for me and the way we vacation. The good news is when it no longer works, Marriott and the HOA created another potential exit strategy. If I know a foreclosure agreement is in place, I could walk away from my unit, let it foreclose and likely have no repercussions.