We have a risk in both fiat and bitcoin money. But for every problem we have solution. In fiat transaction also some fraud thing will happen example credit card fraud transaction but here we have customer support to get help, this facility we don't have in bitcoin trasnmction. Today we don't have, but in future, i think it will come. So try to make bitcoin famous later all issues will solve automatically.
I doubt that. With your example alone, we can conclude that that's not the case in real life. Fiat transactions are all popular. Literally everyone in this world that don't live in some island are having transactions in fiat everyday. Yet, there are still flaws. Fraudsters are still there. Credit cards still get stolen. You can still be scammed or deceived by someone. There's just no perfect system in life and we have to accept that there will never be.
In bitcoin, things like that also happen. All newbies were scammed before. Even the people here that says "Legendary" in their rank were once scammed by a cloud mining company or ponzi. About the customer support, that's never going to happen with bitcoins. You can hire someone to do that but I really doubt that someone can be so powerful on the Internet that he can trace bitcoin transactions and where was the thief from or in which bank did he cash the money out.
Customer supports for bank transfers can easily trace the thief because their system is centralized and their logs shows enough information. In bitcoin, there's just a ledger but no whereabouts.