i've known amritdhari sikhs who, though baptised, were judgmental and hypocritical. they'd do one thing but not another. they'd justify their kid's actions, but would lambast another's children for the same actions. to call them sikhs, simply because they are baptised, and not others, who have good hearts, follow sikhism to the best of their ability w/o being baptised, is wrong.
i don't know what makes a sikh a sikh, but i know that baptism ALONE does not.