Feif
The Holy Chafetz Chaim and his holy disciple Reb Elchonon had open Ruach Hakodesh. They knew fully what they were dealing with. The works of Reb Elchonon are like open, clear prophesy. To say they spoke without fully understanding the situation fully, or that things have changed is to belittle their great far reaching clear vision.
They knew what they were talking about. And no, the founding “fathers”, those “greats” did nothing to instill Yiddishkeit. FAR FROM IT. Any ounce of Yiddishkeit in the holy land is DESPITE their efforts.
Mind you, read history.