I guess what he means is that sometimes Bollywood songs contain lyrics that reflect shirk. Take the SRK song Chaiya Chaiya for example. It contains the words, “Mera nagma wahi, mera kalima wahi”.
The words that are used are not always “Islamic” but they can sometimes make the status of one’s beloved either greater than or equal to God.
I’ve heard examples of such songs…but I don’t agree with such lyrics…they go against the most fundamental principles of Islam.