Weights are source in the same way as any x86 binary is source.
You easily modify a x86 binary and change behaviour or examine the machine code instructions. You probably are not aware how easy it is to change the behaviour of a binary executable.
I'm happy to have and be able to serve these models and see the ecosystem thrive. And lots of open innovation is outside of weights anyway as DeepSeek repeatedly shows.
Dictionary.com defines source as:
> any thing or place from which something comes, arises, or is obtained; origin.