Fair points. I agree the wording could be better.

No, the source code is not available. This dataset is a subset of the raw data our system collects. Our final product made available via the API does a variety of processing steps on the raw data (dedupes, joins, ML predictions, etc). The final, processed data is the piece that is proprietary / subject to the terms.

We will update the site terms to reference this dataset, as we aim to continue releasing an updated version each quarter. I'll have to double check with the lawyers, but it will most likely be MIT licensed.