You still can leave it or move to a place where another ideology is in place.
Because an ideology to be faulty has to not let you chose. You will NEVER agree 100% to anything, it's impossible, so in that part all of ideologies are somewhat faulty if you look them that way, but if you are given a choice that makes a whole difference.

@Snail2
About modern Democracy, it doesn't fit in a single point of the list. Democracy is a hollow ideology, all it states is to let people vote. The parts you are referring to as fitting the list are the political parties that reside inside a Democracy.