But no, i'm sorry i fail to believe that. Sikhisim is a very progressive and modern religion, there is no hocus pocus.
Let me put it this way....Guru Gobind Singh ji, if he thought plays, dramas etc ( analagous to television) were "evil" he would not have written nataks.
These "Gursikhs" you mention are driving Sikhisim back to the stoneage whilst it had developed as a modern and progressive religion. Life comes once, and i'm sure as hell that Guru sahib wants you to enjoy it...now that does not at all imply drink alchohol and cut your hair, it means that a Sikh is able to live in society without these preconceived notions of "higher then though". Which is exactly the path that forumers are travellilng down.