Helping with these is mentioned in useful tasks for nonexperts: https://forum.inaturalist.org/t/useful-inaturalist-tasks-for-non-experts-wiki/35034
A standard comment and link to help clean these up is on iNat frequently used responses: https://www.inaturalist.org/pages/responses#addid
While 7,000 seems like a lot, given the number of observations on iNat, it could be a lot higher. Perhaps that is a sign that folks are helping with this and users do add locations after someone points out the issue.
Edit: I’m sure more volunteers helping on this would be beneficial.