Can anyone think of anything Ashton Kutcher has done in music, let alone country music, other than probably trying to hit on Taylor Swift? When Ashton Kutcher meets someone from country music he automatically thinks they are in Sugarland so that is a great qualification to present the award for female vocalist of the year.
With the exception of Liam Hemsworth, every other presenter has some kind of connection to music. And Liam can says that he has sex everyday with a musician which is probably a closer connection than Ashton has, although if you give him a few hours at rehearsal he could probably change all of that.
The real reason Ashton is presenting is because the awards are on CBS and Ashton is on CBS. To give him one of the big awards though seems kind of wrong.