I dont think choosing to receive is "stupid", it just goes against the norm. I thought Kiffin liked to receive as well? I did think it was funny this year when teams won the toss against us and chose to receive just to mess with us.
And we did score on our first possession a lot this year.
If you are an offensive powerhouse, like Oregon used to be, taking the ball first makes sense. Lebby wants to run "Showtime", so he is implementing that strategy, he just doesn't really have the offense to back it up.