Anecdotally, this seems to be of interest to some younger employees who want to get a mortgage but don't have enough saved for standard home loan.
This is arguably win-win : an employee who wants to get a home loan is able to do so earlier in career with less cash saved (although likely at cost of a somewhat expensive loan), the bank is able to sell a loan at a relatively high rate to an eligible employee but with reduced risk from having a lot more inside information about the employee's source of income from salary & job security.
But I am not sure if any of these employees knew about this perk before accepting a job offer to work at the bank!