Actually Rav Shumel Wosner one of the senior Poskim of this generation and an acknowledged Adom Gadol stated that unfiltered internet is an “issur torah” he gave sources for his ruling.
It is quite understandable how an “issur torah” is binfing on all of Klal Yisroel.
Rav Don Segal (also an acknowledged Adom Godol) repeatedly metioned the Gemorah of “Darkei Achrinah” which states that if one passes by a place where there is pritus even if they close their eyes they are called a “rosha”> this is an open Gemorah in Bava Basra.
As what was being given over was the rulings of Gedolei HaDor who actually were not even asking people to just accept their “psak rather they took the time to explain some of the sources for their Psak Halocha I think that Rav Ephraim Wachsmans words that these rulings are “binding” on all of Klal Yisroel are actually quite obvious.