I voted leave because I was dubious about the control the elected and unelected officials and secretaries in brussels had over British politics, and the rats nest of well paid jobs with crazy benefits waiting for british politicians in brussels when they retire from british politics, so long as they play nice with the EU and go along with the will of the government in Brussels.
The "NHS bus" is a talking point very aggressively focused on by the remain campaign because it's an easy thing to point at as disingenuous, But I feel like there's a lot more nuance to the choice to leave the EU than many "remainers" believe.
It's harmful to national discourse to narrow the argument for either side down to misinformation or this "they don't know what they're voting for" narrative (not saying you're asserting this, I've just seen it said a lot) because it chips away at the very concept of majority rule and proportional representation.