It's a fine idea but feels like it's maybe past its prime in terms of active maintenance? Like I checked out my old neighborhood in the suburbs of a large US city and the primary road through it (which the area is named after and has a very big visible welcome sign indicating that) was misspelled. I don't have an account and didn't care to learn how to edit it, but I did drop a note flagging the error. Then I browsed some of the other notes and noticed they were all multiple years old. Even Manhattan was littered with months- or years-old notes with only a handful of them marked resolved. Maybe they were just hard edge cases not easily fixed, but it gave the impression of a database that has not been broadly maintained for years.
The resolved ones get removed so the harder and harder notes remain. The main obstacle is usully that someone needs to actually go to the location, take notes and edit the map. It's a lot of work.
Please consider creating an account and contributing occasionally. In the site OpenStreetMap.orgthe edit mode is very intuitive and easy, in addition there's Street Complete that makes a fun, quest like gamification for editing and adding information