Instead of worrying about the banks he should have been worried about the moral fabric of the country. At least since the bailouts 2008 there is a (mostly justified) perception that the system is rigged in favor of the wealthy. This has made a lot of people very cynical and has allowed a ton of conspiracy theories to rise. If this trend continues there will be a point when people will vote in a dictator.
It’s already a big problem that politics attracts more and more crazy people and reasonable people are staying away.