How common is oral sex in relationships with respect to Indian context?

My friend [27 M] recently shared that he has no interest in performing oral sex on his girlfriend and, to be fair, he also doesn’t expect her to do it for him. While I respect his perspective, I’ve always believed that oral intimacy is a natural part of most relationships, especially when partners are deeply comfortable with each other.

Is oral sex not as common among couples in India, or is it still considered a taboo in many relationships?