What if you have an autonomous team that set the ambitious deadline themselves? What if the deadline initially seemed realistic but later became more questionab

What if you have an autonomous team that set the ambitious deadline themselves? What if the deadline initially seemed realistic but later became more questionable? My point is, the option and choice to work harder is one of a few options that can be chosen. That choice should never be forced upon the team or individual members, but if done freely it can work out great. And who said anything about unpaid overtime?