ignorant people don't understand the implications of their actions, what they say, and who they say it to. ignorant people are easier to teach bigotry to. ignorant people are simply untaught or refuse to be taught, making them dangerous to the safety of people who could be directly affected by their actions
I'm not calling you out I'm just asking. So are you saying that's the problem with Slytherin, is that the parents of people in that house and the families are ignorant, not that ambition is bad? Because that's what I was trying to say pretty much, except that having a one track mind about your goals, makes you more likely to do that.
actually, what i said a few pages ago was that part of why so many kids come out of that house angry at the world and hating it is because of their environment. everyone says they're evil. everyone says they have to be racist. and as a kid i know that being told repeatedly that you are something makes it hard to think you don't have to be. yes, some of the families are actual racist bigots. yes, their kids learn that too. but no one exactly tries to un-teach the brainwashing of these kids, do they?
and no, ambition is not a one track mind. it's being willing to put the work into your goals. that's it.