I agree that none "in that courtyard" were ministering correctly, however your question did not limit matters to the courtyard. Your question was more general, asking were there those who ministered correctly. Moses and many others ministered correctly, while many did not. My answer of "some did and some did not" included all that attempted to minister the gospel, not just those in that courtyard.
Not only were those men not ministering correctly but they also were introducing things within the church which have no belonging there. Such as the buying and selling of goods. They had turned the church into a "marketplace" and Jesus was having no part of it.