Some material conditions improved, yes. Overall, no. The mass movement against the Shah was successful but the working class failed to control power for various reasons, to put it succinctly.

Do you believe that the Capitalists, bourgeoisie, and fascists will just give you rights and an improved life out of the goodness of their heart? This has never happened. Working class power threatens the system, and if threatened, Capitalism will attempt to squash that working class power.

People think there's some golden age of Capitalism which is progressive and bends to the will of the people. This is a fantasy, and has never existed ever in history.