The internet is an online representation of the world, if it must be filtered then the entire world must be filtered.
I remember hearing a story (I believe it was) about the Baal Shemtov and some of his talmidim.
They once went into an inn and before ordering a meal, asked all about the kashrus and who did the schecting etc…
And someone (who I think turned out to be Eliyahu Ha’Naavi, in disguise) said that people should be as careful about what comes out of their mouths as they are about what goes in.
Would anyone want to take any bets on what the Rabbonim would say is more harmful to the community if given a choice between the internet and rampant Loshon Hara combined with Sinnas Chinnom?