If feminist means believing women should have equal rights, equal pay, not be harassed, and have bodily autonomy - then yeah, most reasonable people are. Women in India deal with specific issues - forced marriages, dowry, preference for sons, safety concerns, workplace discrimination.
Supporting women's rights isn't controversial, it's just fair. But the label "feminist" gets loaded with different meanings so it becomes confusing. Some people think feminist means hating men which is dumb. Most feminism is just asking for basic respect and equality. In Indian context, basic things like women's education, safety, and choice are still being fought for, so supporting that is important.