I think the big 4 is archaic. What does it mean?
If you are saying it's the 4 biggest clubs in Victoria as measured by memberships and attendances, then yes Hawthorn have surpassed Carlton and Richmond (when you include pet memberships
).
My take on this big 4 stuff is really hw clubs fair when they are not doing well. Given that we have made finals less than anyone else on the last 30 years, we hold up quite well. Of course it helps to have the MCG as your home, a tiger as your mascot (kids love them), good colours and the best team song.