Isn't being able to move to a new town and start again also a kind of new thing though too? Cars, moving companies, open borders, globalism, English as a standard language, no serfdom, etc.
I mean, I think you could pick up and move but it was much harder, and how far you could reasonably move when you did move was limited pre-modern era. If you can't move that far, the likelihood of someone knowing you or word spreading is probably higher.
Although I remember seeing an article here on movement of serfs a while back, I think the conclusion was that they were more mobile than one might think.
In the book Fingerprints[0], they mention how, prior to fingerprints, much easier it was to just move to another town/county/state and just start over or even pretend to be somebody else. This was because there was no way to establish your identity with near 100% certainty.
This had pros and cons depending on who you were. For example, thieves loved it as you could drop you criminal record simply by moving somewhere that no one recognized you. On the other hand, there were documented cases of mistaken identity and people being prosecuted just because they looked like someone else. Then there is the case of William West which is better understood by looking at the pictures of two men names William West [1]
Contrast that to today where it doesn't matter which town in the US you live in, there is always a credit record that is tied to you.
0 - https://amzn.to/47XN9Id
1 - https://rarehistoricalphotos.com/will-william-west-case-fing...