Non-commercial license of weights?

I've been testing nnInteractive in 3D Slicer and it works very well. Thanks a lot for developing this and releasing it publicly!
This tool has the potential to be highly impactful (perhaps comparable to TotalSegmentator), but the non-commercial (NC) license for the model weights may ruin everything.

Does NC clause mean that if we use this tool to create some segmentations then we are limited in what we can do with that segmentation?

What is the reason for adding the NC clause? If it is because some NC data set was used for its training, then would it be possible to retrain the model without that data set? A potential slight performance degradation would very well worth it if it allowed this tool to be used universally. How difficult would it be for someone to retrain the model with freely usable data?

(This question is moved from LinkedIn to here, because it was not discussed there; and I would need to know the answers before I can start advertising this tool to the community.)

The issue names no files, tests, or entry points. Start by reviewing the model-weight license and training-data provenance; done means documenting whether the NC clause applies to derived segmentations, why it was chosen, and whether unrestricted retraining is feasible.