One difference: large swaths of Python developers grew up using the system-provided version of Python.

Most Node developers grew up with

    curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash

or

    brew install node

or using one of the dozen other ways to install node. Distinct versions and per-project packages were the norm from day one. That was not true with Python.