I experienced something similar building an internal tool on GSuite. I had a large file with sequences of 9 digit numbers specific to our use-case, all tied to names of people (employees). Whelp, at one point the tool I was working on stopped working, and it was flagged as apparently containing social security numbers (which I suppose matched the character length). Whelp, on the admin panel, you can get a report of t…
That's ridiculous. Storing social security numbers is necessary for lots of businesses. Imagine your filing cabinet not letting you file employment forms with a SS# on them. It's the sticky note password problem all over again...
E.g. here[1] is one of Ancestry's many catalogs based on US government data dumps that even allows you to explicitly search by SSN.
So even if one were to argue that SSNs of living people shouldn't be in GSuite, and there may be many good arguments for that, there are vast quantities of SSNs out there that are explicitly and openly shared by the government. If Google starts blocking me from accessing any of my files with notes about family history, I'll be pissed off.
I guess it's time to move off Google Docs too (I've largely left Gmail)