I mean, really Clinton is to blame for Glass-Steagall repeal, but Trump weakened the measures put into place that partially mitigated the risk from the Clinton policy. Just as Clinton threw out the risk mitigation measure put into place after the Great Depression, Trump undermined the partial replacement put into place after the Great Recession.
If Trump deserves more blame, its because the reason the idea was bad was much more fresh at the time of his action.