The export/import functionality is, yes. This implementation uses the same API endpoints, but the main reason for this existing:
An instance I was on slowly died, starting with the frontend (default web UI). At least at the time, no client implemented the export/import functionality, so I wrote a simple script in Bash to download the user data, if the backend still works.
Running a script can still be a challenge to some users, so I wrote a web application with the same functionality.
It's a bit redundant if we're talking about regularly working instances, but can be of use if the frontend isn't available for some reason.
I largely share your thoughts. I honestly expected Biden to at least be prepared enough to counter the usual Trump tactics of making things up and using strong words to impress his base while deflecting blame or critical questions.
Instead, we got Trump basically having free rein to appear strong with simple (and wrong) answers to complex questions, twisting the truth to support his positions and straight up lying and deflecting when finally confronted with something.
I'm not a big fan of Biden, but IMO he's the obvious, rational choice out of two candidates way past their prime - if you're into rationality over the antics of a con artist.
But this isn't a fair fight, and Biden isn't the showman Trump managed to be today. Biden was barely audible and mostly on the defensive while appearing weak, Trump was the opposite of that. I can't imagine any Trump voter switching teams after the debate, but I can image more than a few more emotionally motivated democrats second guessing their choice.