The problem with hyperbolic statements like “massive cultural hits” is that it gives no room for the rare theatrical event. If we call Oklahoma massive what do we say about Hamilton?
The three shows mentioned were praised, talked about in theatrical circles and may have been influential but they didn’t take over the national conversation. “24 decade” was a runner up for the Pulitzer Prize but has only been performed once in its intended form. Mac tours with pieces of it all over the world but it’s impact was less than “massive”.