It was a very bold statement and completely misrepresented macro economic conditions in Chinas rapidly evolving economy. So while she may have meant the gross misconduct of american to big to fail banks will not ve repeated, it ignores the state of banks around the world, particularily in china.

Furthermore, as central banks begin a new cycle pf tightening. The free easy money of the last 8 years is quickly drying up as these banks now unwind their balance sheets reducing the liquidity in their respective equity markets.

So perhaps she meant that the next crisis of that scale will not be perpetrated by American banks in our life time...uhh her lifetime....