Agreed. Except in the scenarios in which a person is not allowed to donate organs due to healthcare concerns.A less extreme example (rather than organ donation): pt has blood issues. told never allowed to donate blood. should they be allowed life-saving transplant? Yes, both ethically and morally.
However, I'm sure most of you would agree with the blood example bc it is quite different than actual organ donation, but there may be instances, especially in adults who were pediatric patients, that the adult cannot sign up for organ donation, as it would not be prime for the donor. In some states, each individual can be specific about what they want to donate though, and those people could still donate skin/eyes/other tissue most likely.