So you think that, for instance, cherry-picking something specific you don't like and trying to make it a general counterargument to something many people do like, is a good idea?
But they are fully aware that the system worked pretty well, and was pretty stable, for decades, although it wasn't quite as profitable for the financial industry.
Although RyanMcGreal didn't refer specifically to Glass-Steagall, it's a good bet that "re-regulating" (i.e. re-introducing measures from that law) might be a bad idea in several cases, Regulation Q being one of them.
For instance, she recently wrote that wealth inequality was probably worse in the 90s than it is now. In fact, it's now much worse than it was then. She didn't bother to check her own assumption.