Is 3d Graphics the hardest kind of programming ?

1) Is 3d Graphics the hardest kind of programming ? (I mean compared webdev, database, desktop stuffs in C#/Java etc)

2) How long does it take to be a competent 3d graphics programmer like Carmack for example ? (for someone who isn't new to programming)

3) Do you feel C++ is becoming bloated slowly with newer version or hard to choose as a language to create new project in ? (I mean new project in other field outside of games)

4) Do you think graphics programmer are vastly underpaid for...

Is 3d Graphics the hardest kind of programming ? WordPress ...