Yes I’m joking because the very premise of comparing the age groups with specific questions is problematic. “Are you a feminist” doesn’t mean the same thing to someone born in 2002 as it does someone born in 1972.
If you ask me…a 40-something man, I say yes I’m a feminist because I want you to know I am an ally and support women. If you ask a 16 year old, I would doubt the word means much to them at all. But I bet they will be more supportive of women than our generation anyway.