Filters only go so far. If someone, an adult, your child, spouse, anyone REALLY wanted to view objectionable material, they can go to the library a( and many other places) and view to their hearts content.
At the asifa they stressed sur merah, but they also touched on “asey tov”. While not much time was spent on it, the Skverre Rebbe Shlita is on record as saying children filled with yiras shamayim and a love of yiddishkeit are not likely to be drawn to the internet or be ensnared by it. Rav Waxman repeated a similar story with the Amshinover Rebbe Z’l. If there was no void to fill it wouldn’t be filled with content available online.