most dead bodies aren't suitable to be used for transplants anyway - those who are very elderly or very ill, their tissues will be no good to anyone. certainly zero CV19 victims would be suitable - any transplanted tissue would immediately infect the recipient!
most tissues are only any use if the person was healthy immediately before a sudden accident that didn't kill them immediately but got them to hospital and onto life support which then subsequently fails to revive them - the brain dies leaving a body that is being kept oxygenated artificially but isn't 'alive' in any real sense)
this awful scenario plunges a family into grief and in the midst of that pain they have to decide whether to allow the unneeded organs which would otherwise be buried to rot or burned, to instead save someone else's life.
Up till a few days ago, there was an "opt in" system where those who had thought about it and got around to it could put it in writing that they were fine to have any organs they no longer need (being dead) used in this way. and lots of families had to make this choice in the absence of this helpful info because the typical potential donor (think motorcyclist under the age of 30) hasn't thought about this question enough to bother making a choice.
the only change is that now it's "opt out" and those who haven't bothered to think about it are assumed by default to be decent people who would, if they thought about it, choose to be a donor. anyone who has strong objections eg religious beliefs can just opt out in a few seconds and no harm is done. the next of kin still get consulted, it's only that absence of evidence that this is something the deceased positively wants is no longer a problem.