This is now a creek draining the lake, it doesn't look like it has been a road for many years. A pic I took on Jan 10th 2023 of the alleged road.
https://dgtzuqphqg23d.cloudfront.net/HcZUk9yhyIrzX42aH-5FAP695qqXMd-5AqVV23SHIAc-1536x2048.jpg

Way osm.org/way/5398431
Changeset osm.org/changeset/126129246
A large section of a well used road has been marked as a ‘private driveway’ in this change, I don’t know which driveway they were trying to mark private access but pumpkin ridge road is definitely not a driveway. I was on it Jan 10 2023, saw numerous other vehicles on it, and rode the length from Murphy road, just past the south end of what is now marked ‘private driveway’, to Smoke Ranch road which is about 3/4 of what is currently marked private. None of that was a private driveway, beyond Smoke Ranch I don’t know, although there was a sign saying Pumpkin Ranch road was a dead end.