I don't think that's the case. If Paypal wanted, and it was legally allowed, they could anonymize my data to an extent where not even their own team could know

I don't think that's the case. If Paypal wanted, and it was legally allowed, they could anonymize my data to an extent where not even their own team could know who I am. We don't do it because it would be open to fraud and scams, not because it is impossible.