it's so validating getting the same conclusion we got to from someone that i've never met. it seems that they create these products without ever speaking with someone with that problem.
Funnily enough we're creating a competitor of these third party app that you mention, with the huge experience of my colleague that is son of blind parents.
We have an mvp online but it's not much yet and i really don't want to be the "do you know i have an app?" guy.
If i may add, they won't complain because the headlights of their cars aren't the ones that are flashing directly at their own face. To them the problem will always be the other's cars having the lights too bright.
Blog posts are really a scourge both when learning to do something new, and when you're googling your way out of a bug. Most of them are stuck in time (so no updates ever) and find solutions to problems that are similar to the one you're solving, but not quite the same.