DeepSeek's gifts to the world of its open weights, public research and OSS code of its SOTA models are all any reasonable person should expect given no organization is going to release their dataset and open themselves up to criticism and legal exposure.
You shouldn't expect to any to see datasets behind any SOTA models until they're able to be synthetically generated from larger models. Models only trained on sanctioned "public" datasets are not going to perform as well which makes them a lot less interesting and practically useful.
Yes it would be great for their to be open models containing original datasets and a working pipeline to recreate models from scratch. But when few people would even have the resources to train the models and the huge training costs just result in worse performing models, it's only academically interesting to a few research labs.
Open model releases should be celebrated, not criticized with unreasonable nitpicking and expectations that serves no useful purpose other than discouraging future open releases. When the norm is for Open Models to include their datasets, we can start criticizing those that don't, but until then be gracious that they're contributing anything at all.