I am sorry your commitment is turning into a bit of a disappointment. What you describe - fixing the names of picnic sites - seems a good idea indeed. The trouble here is that nobody really can follow what and where has been changed exactly. Because of the scope, not even achavi can display the changes. So, that's why prior discussion and documentation of mass edits are crucial.

You suggested to revert the changeset: I think this is a good idea. 

Data quality assurance is greatly welcomed. So please do not give up on fixing dodgy data!