What does this mean??
Sounds bad. Please explain?
The IRS is like the rest of the US society - it operates with a basis in fear (homeland security, migrants, guns to protect yourself, ... )
These huge penalties do get paid by some people, but ones who are engaged in serious tax evasion, money laundering the proceeds of drugs and arms sales, etc.
You are non-willful because you did not know about any of this until someone at work mentioned FATCA to you. One of the benefits of the streamlined program is that all penalties are waived. So you will not be hit with any $10,000 non-willful penalty.