I don't fully agree with this statement.
The ninja basics are pretty easy and you will understand the basic rotation easily too.
Monk ain't that difficult to understand but is, in my opinion, the job that require the most skillcap out of the 3 melees DPS.
The difference between good and decent Monks is incredible in term of potency.
I enjoy both, my advice would be give a try to both and decide by yourself ;)
