"why this kolavery di" song by Dhanush. Review

Recently the Tamil actor Dhanush has written a song called why this kollavery di . The song became popular in short time and he was congradulated by many from Tamil nadu. But the song according to is not a good one. He is having the background and so all his works in acting, song, lyrics are made good. But really are they good ?
The song creates bad qualities in the youngsters heart. I think everyone know that no tamil movie title should be in english . The title should be only in tamil. This was said to save the Tamil language . Then how do they accept the english words in Tamil songs ?