After the German occupation in 1940, the Nazis accessed and exploited the Dutch population registry, including religious affiliation.
About 75–80% of the ~140,000 Jews in the Netherlands were killed.
This is the highest percentage in Western Europe.
Compare that to France, which had a more fragmented administrative system, and less complete central records and 25% of Jews in France were deported and killed — a much lower percentage than the Netherlands.
As usual, when reaching the Godwin point, the idea is not for you to take it at face value, but to extrapolate to your situation.
The concentration of power and centralized people tracking are eventually always abused, and once your system becomes less free (which has historically eventually happened on a long enough timescale), you will pay the price for it.
In our case, having a full history of all opinions, interactions, locations, and behavior linked to full identity of people is what we are ultimately talking about here. It's already well on its way, but it will make it worse.
The more you concentrate power and feed data about people, the greater the potential damage.
And of course, it doesn't need to be a full-on dictatorship to get problems with those.
It's a spectrum of increasing problems you will get, the more you lean into it.