- 10,696
That doesn't sound like he was talking about the guarantees in case of insolvency. Likely just the interest rate guarantee. I am sure a roofer can talk about a 10 year guarantee of a warranty even if it is only going to be honored if the business is still in operation.
FDIC insurance is only honored if the United States still exists. And if the US Treasury approves loans to the FDIC fund when it runs out of money (which has happened many times in US history, but they also do have the right to deny the loan).
At some point, nothing is guaranteed. Context matters.