Earlier quoted context omitted.
Is it tho? It's not really open source if they don't give us the information regarding training datasets
It definitely is open source even if they don’t disclose all details behind the training
A good definition of “truly open” is whether the exact same results can be reproduced by someone with no extra information from only what has been made available. If that is not possible, because the reproduction methodology is closed (a common reason, like in this case) then what has been made available is not truly open.
We can sit here and technically argue whether or not the subject matter violated some arbitrary “open source” definition but it still doesn’t change the fact that it’s not truly open in spirit