To date, it seems lots of renters are ok with vouchers on the cancels, and many who are looking at "saving so much money!" are pointing at the vouchers as the agencies making things right. I think the actual execution of if people holding vouchers get FIFO rental with the agencies (over new reenters bringing cash in hand), and if they can get rentals that they are okay with (BCV in May becoming Saratoga in mid-January is not something many feel to be an equal trade).
The agencies are deleting negative feedback anywhere they have the delete button, but if things sour they can't delete it everywhere.