Output of hdfs dfs -count -q contains 8 fields, It would be really useful for users if the output of hdfs dfs -count utility contains header. I always refer -count apache documentation or internal docs to figure out the different fields of hdfs dfs -count -q.
No need to add header in the default count output. If a user wants to print the header, he needs to explicitly specify the argument, there by default behavior remains same.
Since -h is used to human readable, -header option can be used for header.