Why is this surprising? Overnight rates are still 0.25%, and 1-month bills are 0.46%. Online savings accounts are at 0.6-0.65% now and have not fallen below 0.5

Why is this surprising? Overnight rates are still 0.25%, and 1-month bills are 0.46%. Online savings accounts are at 0.6-0.65% now and have not fallen below 0.5% the whole pandemic. The oddity is why they've not fallen to 0% before, but that is because there is an effective duration of savings which may have been shortening recently as rates rise. As for brick-and-mortar banks still at 0%, going by their low-balance fees, 0.5% probably only covers their overhead, if that.