The original point was "why would I learn a new thing, when I already know something which works". The response "some people don't have something they already know" is valid.
You're really bringing up a separate point which is "should we be reinventing the wheel?", I think that's a fair point, but it's not a response to the original commentator.
The batteries are powered by solar panels. In either case the same arguments apply - space is notoriously low power.
Phones can't use directional antennas, otherwise you'd have to point them at radio towers. Using phased array antennas in which directionality is software controlled, there's a trade off between size of antenna and how much you can focus the beam - it wouldn't work in a phone (and would be too expensive anyway).
In the UK I've heard it said you can make a subject access request (SAR) for any information a company holds on you. This would include interview notes for example.
I assume something similar applies in the rest of europe due to GDPR?
I think adding feedback for marking cells as dependant on each other might be a good idea.
I'd also love code completion in notebooks.
I think the cleaning and code reuse problems can easily be mitigated by putting functions into libraries and using auto reload.
My normal workflow is hack something in a notebook until it runs, then refactor and put in a library I import with auto reload. I work on production ML and I use this for both software development and research.
I don't disagree with most of what you say, but I do disagree with your implied conclusion.
Setting a baseline of limiting/banning provably false information is a good thing. Yes, it doesn't stop all forms manipulation of people towards any given agenda, but it certainly doesn't make it easier, and means things have to be at least slightly anchored to reality.