1) Well, all the bitcoiners think Banks are a scam right? The same applies the other way around. People have opinions and you should only care what you think. Don't try to change their opinions. You know Bitcoin's progress did change a lot of those negative feedbacks.
It is not just an opinion, it is based on facts. For example how many times we have read that some bank (eg. JPMorgan) was caught laundering money? How many times they have done all kinds of illegal activities, they even crashed the economy back in 2008.
Meanwhile bitcoin is a protocol and a payment system and there is nothing fraudulent in that.