If you are ‘looking’ for a renter at a given rate, then the value isn’t reassessed.

If you lower your rate and rent it at a reduced rate, then the value gets reassessed. If it gets reassessed too low, now your loan gets margin called and you need to pay cash to keep your loan to value within a set range. If you don’t have that money, then it’s in your interest to keep looking at unrealistic rents.

There is also commonly a provision to tack missed payments on to the end of the loan + interest so the financiers aren’t that quick to foreclose. Finally, any changes to the agreement require a % of financiers to agree which gets difficult when the financiers get more numerous.