Just another [proprietary] pre-installed program
I always found it odd that the RPi Foundation championed open source and yet chose to bundle proprietary maths software instead of SageMath.
Yes it's a nice gesture by Wolfram, but still it seems contrary to the whole RPi ethos, a bit like the proprietary VideoCore IV graphics driver (a problem which has since been resolved, unlike the proprietary codecs problem, a.k.a. the MPEG-LA tax).
Anyway, I'm not suggesting that nobody should be allowed to run proprietary software if they want to (I do), but on the other hand there's a difference between end users choosing to do something, and an organisation founded specifically to reintroduce real computer science back into the classroom (and education in general requires open access to information) actually promoting something that restricts access to information.
/end Stallmanistic rant