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.
A few months ago I reported a missing section of road where I'm from and they corrected it in like a couple of weeks. Maybe it depends on how many people reports the same thing? IDK
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