To clarify: Microsoft linked to a dataset on Kaggle, which is falsely labeled CC0 (Public Domain). It's the fault of the user who uploaded the dataset and misrepresented the licensing.

Multiple failures. One on writer of blog even for a moment considering that such data set would be legal. And next for MS for hiring such a person with that poor judgement. Namely publicly posting about it on company platform. Instead of choosing some other data set.