I think you illustrated the point of the deadline well. How else were they going to get you to work 16 hours days? No way to make someone eat the cost of estima

I think you illustrated the point of the deadline well. How else were they going to get you to work 16 hours days? No way to make someone eat the cost of estimation error by pretending there is no error and making job performance and team esteem dependent on "not failing the sprint".