You can read all the other comments which explained why it is not open source. You can't really retrain the model without petabytes of data. Even if you "train" stuff on your dataset: it's more like tweaking the model weights a bit, rather than building the model from scratch.
"Open source" is PR talk by Meta and deepseek.
So it's important how a state is labeled (especially, if it's labeled "jewish"), not what the state does. Noted.
/s