Better a downloadable blob than a non-downloadable one
A truly open model has open code that gathers pre-training data, open pre-training data, open RLHF data, open RLAIF data generated from its open constitution and so on.
The binary blob is the last thing I'd want - as a heavy user of LLMs I'm actually more interested in the detail of what all training data is in full, than I am the binary blob.
That’s like a chef giving you chicken instead of beef and calling it vegetarian.