This is an empirical question that I feel you are trying to twist into a political one.

The sole question is can you on 100 dollars a month today live in a manner similar to what the average person in the 20s did

The empirical questions are what does 100 a month buy you today and what was the average lifestyle of a person in the 20s in terms of how much would it cost to buy that lifestyle today

Questions of how we got feminnism and better medicine since then is irrelevant and trying to distort a simple empirical analysis into a political one