It's becoming apparent just how far the ripples spread out into the world, when you allow one person to legally falsify a document/ status.
Parents, especially mothers (as they gave birth) have their lived experience erased/rewritten.
As others have said, medical records will be missing - some people have been given a new NHS no upon transistion so their entire medical history is 'dead' unless they choose to disclose it, putting them at risk.
I've seen on the transwidows thread women talk about having a marriage certificate showing they married a man, but their decree absolute has a woman's name on it when they didn't marry a woman.
State sanctioned gaslighting.
I have every sympathy for someone who feels extremely distressed that their sex doesn't match their perceived gender, but they don't live their life in a vacuum. We aren't players in a computer game. We are part of couples, families and society and those relationships can't just be erased.