I hadn't heard about that. Which banks lost their customers' money in the 2008 crash?
Banking involves a lot more than simply money in checking accounts so I didn't think it needed to be established that a lot of people lost value in different ways in 2008. A number of banks packaged subprime mortgage lots that were misrepresented, sold and when they defaulted, they crashed the lending market which rippled through other parts of the economy causing job loss, real estate price crashes, stock value crashes and other types of lost equity for millions of people.
But I guess if you want to take it literally, then you're right... nobody had cash go missing from their checking account. I personally lost about $60,000 in equity, but my checking account was not affected if that makes you feel warm and fuzzy about saying no banks lost anybody's "money".
If I were to rob you, claiming that the overall robbery rate was lower that year, so you weren't robbed by others, so your expected losses were lower does not change the fact that I robbed you.