yes, of course the scenes described are somewhat true, except the last one (Ms. Shobha Warrier has really got good imagination. She should try script writing for masala films, especially Telugu films!!).
It is bare truth that still Chennai is worried about culture. That's why unlike in Delhi, girls are not gang-raped in running buses and cars. Big brothers, anywhere in India, act the same way and so is the Guardians of Chennai city. There is nothing special to criticize But, in chennai, they dont rape the girls in the park like what had happened in Delhi.
Yes, even in discotheque and parties the culture is maintained. That's why Jessica Lal sort of incidents are avoided.
