Because 20 years later, everyone has given their data away on TikTok anyway and we're still dealing with the same issues with different digital government ID numbers that aren't joined together at all.
I have (that I remember, probably more):
National Insurance Number
NHS Number
Unique Taxpayer Reference number
A student loan Customer Reference Number account number
A passport number
A government gateway ID number
A driving license number
An account with the land registry