Yes, a person with ED can still ejaculate. However, it may not happen as regularly or reliably as previously.
Doctors may diagnose people with ED if they have a difficult time getting an erection 25% of the time.
Additionally, the NIDDK states that a person with ED may get an erection sometimes but not every time they want to have sex. In these cases, a person may complete sexual intercourse.
Because of this, a person with ED may complete sexual intercourse sometimes but not all the time.