The picolisp language doesn't differ between the custom assembly language implementation, the llvm implementation pil21 or the Java implementation Ersatz. Saying that picolisp has become less minimalistic because one implementation has a library attached which you think is heavy weight makes me think you misunderstood something important somewhere.
I was missing that there are implementations other than the llvm one, just went looking and found https://software-lab.de/doc64/README which I am delighted by, thank you for the hint!
