Map creators include intentionally incorrect information (Map Traps) so people copying them are obviously copying them. I sometimes wonder if that’s the root cause of companies failing to correct some of their mistakes.
Using anything that could cause incorrect directions as a trap location / trap street would be a ridiculously bad idea. I strongly suspect the reason is a more standard corporate one; the volume of corrections and signal to noise ratio is probably quite poor.
In the case of my repeated Uber map correction attempt, I suspect that my correction isn't prioritized because of two factors: first, the turn which Uber Maps suggests, while both illegal and very dangerous, is not impossible (it's an illegal left turn accomplished by making a U-Turn around an island designed to prevent left turns). So, they probably see enough volume of "driver completed route as suggested" data signals to ignore any "but it's illegal and dangerous" complaints, a classic problem with "data driven" systems. And, Uber don't seem to have a real process for riders to submit mapping corrections, only drivers, so my request is unlikely to ever be routed to the correct queue to begin with.
Map Traps (as these are called) are normally pretty harmless, e.g. a non-existent, small cul-de-sac that doesn't exist. A turn restriction (which is quite invisible!) seldom is.
Meanwhile, in Toronto, I see some bigger driveways listed as roads on Google maps, and I always wonder if it’s a legally correct city survey artefact and I could park a car there etc. if I wanted, or just a trap/misclassification.
In the case of my repeated Uber map correction attempt, I suspect that my correction isn't prioritized because of two factors: first, the turn which Uber Maps suggests, while both illegal and very dangerous, is not impossible (it's an illegal left turn accomplished by making a U-Turn around an island designed to prevent left turns). So, they probably see enough volume of "driver completed route as suggested" data signals to ignore any "but it's illegal and dangerous" complaints, a classic problem with "data driven" systems. And, Uber don't seem to have a real process for riders to submit mapping corrections, only drivers, so my request is unlikely to ever be routed to the correct queue to begin with.