Surely you cannot discuss independence without discussing what you think is likely to happen? Undoubtedly there are some voters who are just Yes or No regardless, who have a fundamental belief that one or the other is right. But most people aren't - most people are going to think about what might happen, what are the likely outcomes. And everyone will assign different probabilities to different outcomes. Their own experience, knowledge, hopes, fears will influence what they think might happen.
You find Rose's perception infuriating, but it's not wrong. It's just not yours.
I don't understand the hatred of higher rate tax payers. Most of them are perfectly normal people who have worked their way up to a good wage. The lower earning 60% of the population (figures for UK as a whole) are net recipients - we need the higher earners to balance that out. In Scotland, a high number of them are either directly working in, or indirectly impacted by, industries which would be hit hard in the event of independence.