A lack of education on a certain accent and/or look might also trigger honest curiosity in people, as opposed to racism. But I guess the way people ask you background questions reveal their agenda.

In addition to what was mentioned already, read Door to Door, and use this famous constant (by an Italian!) as a counter argument if the function of the road/project is to solve traffic.

If you really want to feel out: Braess’s Paradox.

Provide out-of-box ease of use on everyday devices operated by low-skilled users.

I mean, Linux technically could, but the incentive to push for this is not nearly as high as the commercial incentives of providing this experience using Windows. So unfortunately it currently can’t.

Hard to answer. I guess there is none.

Us j, k, l (-10s, play/pause, +10s). Does not require player focus.

I don’t think you’re looking for a reader, but a podcast app. Something like AntennaPod should do the trick. I use Pocket Casts but don’t think it’s on F-droid. Remember, RSS is an infrastructure not a user experience.