I personallly never trusted autoremove nor will I ever.
OK, autoremove is never reliable
also thanks for the other answers.
But the intention of my question was slightly different.
DU (still) wants to remove mainly python3 stuff.
I assume, that "autoremove" concludes, that when this python3 stuff isn't available any more, other python packages aren't necessary either.
I hope, DU will soon leave those python3/jupyter-packages alone again.
If that happens, some packages might vanish from the "no longer required"-list, that are now seen superfluous by "autoremove"?
Besides fundamental interest in this question, it would be quite some work investigating all that packages, that might even be useless.