Possible, but in my opinion, highly unlikely. "Maintenance" is but an excuse. Seriously, all the dorms in Florida have teenage kids who use mini fridges and freezers. If maintenance were an issue, it wouldn't be a part of their "packing list" and demand for mini-fridges in Florida would be sky high.
Even if DVC switches it out once a year...and let's take Poly, with 380 studios (~4,000,000 points) as an example. If each unit cost $500, and they change out each unit every year, our dues will go up by $0.0475/point. Knowing that each unit will cost less than $500 (bulk purchasing) and a life expectancy of a mini-fridge is ~8 years...just add the $0.0059/point to my dues. And we're talking Poly here, which is studio-heavy. Aside from VGF, other resorts have fewer studios and thus fewer to replace, and the amount added to dues is greatly diluted.