Never argue with an idiot. They will drag you down to their level and beat you with experience!
Back on topic.....
I looked at PFF's grades on Boothe.
Last year he was awful at -16.0. This year he finished +8.2, good for 22nd out of 81 guards. He was particularly good after week 4.
Boothe is going to be 30 soon, so despite the huge improvement in his play I doubt they give him a long term deal.