There may some truth to this. I simply thought it was a coincidence that several Gilead missionary couples I knew all returned to the States within the past 6 months. They all gave legit reasons like sick parents, one of them was sick, needed to spiritually help their own family members or dealing with some issue or another.
About two years ago letters were sent to all non-Gilead missionaries (aka need-greaters that went through the branch) that all branches would no longer sponsor (in name only as you pay all fees unless you attended Gilead) missionary visas. I know about 50 need-greaters that returned back to their home country when their visas expired over the past couple of years.