You're right: Knowledge shouldn't be the end goal, but I think you're overstating the effect of fringe communities on the internet.
Consider that for many people on Earth, getting access to the internet takes them from the knowledge shared amongst the members of their community to the collective knowledge of world. That's quite a leap, and I'd argue that having to read flat-earther nonsense once in a while is a price well worth the benefit
Consider that for many people on Earth, getting access to the internet takes them from the knowledge shared amongst the members of their community to the collective knowledge of world. That's quite a leap, and I'd argue that having to read flat-earther nonsense once in a while is a price well worth the benefit