Yep! Hence why daft comments like 'Bodily autonomy should end at death' are utterly ridiculous and dangerous.
You don't have complete bodily autonomy when alive if you're a woman anyway, even though abortion is pretty much effectively on demand in the UK, the law actually says otherwise.
Administering a register of people needing transplants who are not themselves prepared to be organ donors is pretty easy, i can see pros and cons of organ donation but i don't think this is a huge hurdle.
Tattooing "i am an organ donor" on your chest won't, in the face of your NOK saying "nope" will not override their wishes. The wishes of the living do take precedence here, for some bizarre reason.
People who were previously donors and have now opted out slow handclap. My hope is that the register of potential organ donors has now increased exponentially anyway, and that more people on the transplant list get at least a few years of extra, meaningful life out of this.
There are still a lot of discussions to be had about organ donation. Not least about when and who decides, for eg, about ending life-support and who can override a potential organ donor's wishes.
IMO the only reason this has been brought in is to make it easier for medical staff to approach next of kin when someone dies, nothing more, nothing less.