No one gets to choose the delivery date, other than actual reality. Anything before that is a prediction. The question is how good is your predictive model and do people understand the error margins. In my experience high ups like to promise dates (in general). But it’s a dance: everyone knows it’ll be later because “IT project”

It takes a lot of trust and maturity and skill (from both technical and business side) to have continual value delivery instead of estimates. This is possible but not the common case.