If you prefer chocolate ice cream to vanilla ice cream, that doesn’t make you bigoted or prejudiced against vanilla. Preferring one thing to another isn’t, in itself, a value judgement. When you make a value judgement, that chocolate is better than vanilla for some arbitrary reason, then it becomes problematic.
The example another person gave is on point. In relationships with people it usually comes down to "this relationship might not work out since I'm demi, but I like you so let's go on a date" versus "I don't go on dates with allo people".
Maybe it's a cliche, but it bears repeating: preference is fine, prejudice is not.
What would be the differences in this case, can you please give me examples?
If you prefer chocolate ice cream to vanilla ice cream, that doesn’t make you bigoted or prejudiced against vanilla. Preferring one thing to another isn’t, in itself, a value judgement. When you make a value judgement, that chocolate is better than vanilla for some arbitrary reason, then it becomes problematic.
The example another person gave is on point. In relationships with people it usually comes down to "this relationship might not work out since I'm demi, but I like you so let's go on a date" versus "I don't go on dates with allo people".