According to the command monitoring spec:
All legacy operations MUST be converted to their equivalent commands in the 3.2 server in the event's command and reply fields. This includes OP_INSERT, OP_DELETE, OP_UPDATE, OP_QUERY, OP_GET_MORE and OP_KILL_CURSORS.
However, pymongo.helpers._first_batch publishes a command event in the internal format returned from pymongo.helpers._unpack_response:
This affects pymongo's helpers for listIndexes, listCollections, currentOp, and fsyncUnlock.