I would disagree that "lazy" is the same thing as "efficient" as the connotations are different. What would you want your review at work to say that you are? "Jane is an extremely lazy worker" is certainly not the same as "Jane is an extremely efficient worker."
That said, I also disagree that aikido is a lazy art, just as I disagree that the art is "passive" or "defensive." It certainly is a most "active" art in my mind.