Is there any reason why scipy takes so much space to load?

I've tried out creating a simple pyodide app that uses Scikit-learn for classification: https://alpha.iodide.io/notebooks/1836/?viewMode=report

The app takes roughly a minute and half to load. Network profiling in Chrome seems to indicate that one of the major cause is scipy.data, which takes roughly 67 MB to load (on my network, that is roughly 20 seconds to download the entire package). Here's a picture of the results:

In comparison, scikit-learn.data and numpy.data are roughly 4 MBs each. Furthermore, it seems that scipy.data cannot be cached either.

Thank you in advance!