Even if he is faking it - there is some value. There is a AA saying "fake it till you make it" and many do make it. A good friend of mine did after over 20 years of being drunk as a skunk. My son, unfortunately did not take to AA.
My friend says the early test is step 4 (make a searching and fearless moral inventory of ourselves). Many people cannot get past that or do a dishonest job and then leave the program.