Though it sounds like they're mainly talking about bankers jailed for fraud related to the TARP loans themselves, as opposed to the mortgage fraud that precipitated the crisis.
https://www.housingwire.com/articles/38536-failed-bank-ceo-g... https://www.justice.gov/usao-md/pr/former-president-and-ceo-...
https://oig.federalreserve.gov/releases/news-bekkedam-senten...
https://www.washingtonpost.com/news/business/wp/2015/09/02/b...
https://www.housingwire.com/articles/38536-failed-bank-ceo-g...
https://www.justice.gov/usao-md/pr/former-president-and-ceo-...
https://oig.federalreserve.gov/releases/news-bekkedam-senten...
https://www.washingtonpost.com/news/business/wp/2015/09/02/b...
Again, literally just the first half of the first page of Google results. People can do this on their own, too, if they want to learn more about it
The fact remains that nobody who caused the crisis day saw a day in prison, and the banks who did were bailed out when it easily could have been the soon-to-be-homeless citizens instead.