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.
All my legitimate submissions sit forever unacceped, but they were very quick to accept my submission of a landmark location on my old trailer as a “Palace”. Only recently noticed they removed it after years of saying Pleasant Valley Palace was a landmark in the middle of a trailer park, lol.
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.