Drawing is more important than painting

[ReneAigner]

Lets say that all concept art produced is 3D. Does this mean that drawing should not be studied? 

That depends on how intuitive the 3D apps are. At the moment, knowing how to read blueprints is really useful for any 3D artist, and for 2D artists, well, you need to know how to draw to overpaint 3D output in any case.

But in a hypothetical world where concepting can be done 100% in 3D, drawing is obsolete for that type of work, unless you use a really, really broad definition of "drawing".