Thankfully we don’t live in a democracy. America is a democratic republic. As the public is naturally under-informed, this is arguably a good thing; regardless of your views on Net Neutrality.
E.g. has Trump been able to build the wall that arguably half the population approved of? No, because his budget approval process has been checked by other elected representatives.
Most Trump supporters did not elect trump "knowing ... he would end Net Neutrality", and a statement from 2014 does not disprove that (a cursory glance at r/TrumpCriticizesTrump/ kinda makes the point).
The US public is atrociously misinformed as a whole, either due to lack of education or bad media incentives or both. In order to function, a democracy requires an informed public.