Why not? According to GDPR someone can show up and request (1) fixing personal data (PII) like nickname - this is data accuracy requirement, in fact, according

Why not? According to GDPR someone can show up and request (1) fixing personal data (PII) like nickname - this is data accuracy requirement, in fact, according to GDPR Yahoo should do the data accuracy check (for instance send a reminder to the user to check data). (2) Someone can file data portability request, Yahoo needs to provide this. (3) Some can request data removal. (4) Yahoo has to managed user consents for anything they do with those data. For a product that does not bring any revenue or significant revenue, it is better to dump everything and simply don't be associated with data any longer. That's the side effect of GDPR, it is hard from the technical and financial perspective to maintain anything free on the Internet that keeps user's data.