I don't understand. OP suggested that giving people "explosive" offers is an indication of poor culture - I point out that the necessity to make a decision quickly is dictated by respect to candidates since we don't want to make people wait any longer than necessary. So again, how is this an indication of poor culture?
If you really believe you have a good culture, and attract the best talent, you should be able to offer your best candidate the position and wait for them to decline or accept. Other candidates may move on if you tell them you've extended an offer and are waiting to hear back, but forcing someones hand is a poor culture indicator, and being in a rush to hire in the majority of the cases indicates lack of planning.