At least with open street map, you can login to openstreetmap.org/edit and mark the bad road as private/gated or even delete it entirely. I did it on a bad road segment in my neighborhood and ride-sharing drivers no longer made wrong turns there (Grab apparently uses OSM instead of Google Maps data).
We had this same problem and did just this. 3 years later still no changes. Until my dad happened to be complaining about it at a party and was introduced to a friend of a friend that worked at Google with the maps team. Was finally fixed a week later. So yea a path exists but 3 years is a long time to wait for a simple fix.
I swear they use the Maps Contributor ratings to determine how quickly they make changes.
I've not had any issues getting changes made in a timely manner when I suggest them because I've left a bunch of reviews and photos for places I've visited.
If you never leave reviews or photos, they probably don't trust your suggestions. That's just my guess though.
Crowdsourcing is nice but I'm not happy about the "don't mark temporary hindrances" thing in OSM, some of them last for months and I can't warn others. Sometimes I even forget the hindrance myself and feel real unsmart dumb.
Oh right, it could easily be abused by traffic trolls. Didn't cross my mind, sometimes my faith in other people are unreasonably high.
Perhaps some sort of validation system, if two users report the same temporary hindrance? TBH I can't be bothered to work out a fool-proof system for a hypothetical solution I doubt will ever be implemented hah.
I may not longer live in Vermont but man I've been wanting to get Google maps updated on all the roads that no longer exists also now I live in Florida I'm finding none of the bike lanes are recognized