> E.g, Mistral Nemo can't be considered open source, because there is no Mistral Nemo without the training data set.
Right here - that's your logical conflict. By downloading the model file, you can run it, thereby you can "have Mistral Nemo" even without having the training data, contradicting your statement -> your statement is invalid.
@dandi8 the license of Adobe Photoshop is not open-source because it specifically restricts reverse-engineering and modifications, and a lot of other things. The license of Mistral Nemo IS open-source, because it's Apache2.0, you are free to use it, study it, redistribute it, ... open-source doesn't say anything about giving you all the tools to re-create it, because that would mean they would need to give you the GPU time. "Open-source" simply means something else than what you think.