"His greatness was Torah. His life was Torah. Everything about him was Torah. Nothing else mattered to him outside of Torah."
This is a terrible slander. Did God matter to him? Did Klal Yisroel matter? Did mitzvos matter? You are seeing here Manalism in action, that's militant neo-Litvish madness.
https://yated.com/rav-chaim-ztl/
Did it start here:
"The idea of the highest form of Torah, this is what Reb Aharon brought to America. This highest form of sitting and learning l’sheim Shomayim. Sitting and learning and nothing else mattered. This is what he put and planted in America." https://www.shemayisrael.com/ravaharon/rwolowitz.htm