Many fines are just a tax on the poor and would fall under this.
I had a buddy who was rich, like fuck-you rich. He'd park his hummer wherever he felt like it (handicapped spots, up on the curb, etc), and every week he'd take his stack of parking tickets and write a cheque.
A lot of wealthy people are like this. They have no concept of what $100 is worth to an average person, and if the only punishment for something is a monetary fine, it's effectively permissable for them.
Maybe I just don't have the context to understand this, but it sounds like some sort of a misunderstanding. I can't say whether you might be on the spectrum, but I'd be equally confused at the person's response. It's possible they misunderstood or were otherwise having a bad day. But in this case, I'd say it's probably not you.