I agree it's a nice comment, i.e. it's not pointless in that context. The context is the case of a person who knows N related things focused in one areas and as

I agree it's a nice comment, i.e. it's not pointless in that context. The context is the case of a person who knows N related things focused in one areas and asking how/if he should pick up a few more for hobby. Think of the question: "I speak 4 languages fluently, what is the next language I should learn". A similar comment is then applicable.