Just looking at the latest ETF market data report from Deutsche Bank as of Friday 25 September. The recent (current) market volatility hasn't really been a major factor in terms of in or out flows. Focusing firstly on equity flows, last week saw net outflows of US$7.9 billion but this after a previous week inflow of US$25.8 billion.
Fixed income ETF's saw positive inflows in both weeks (US$1.8 billion and US$0.3 billion). The market drop over those two weeks though saw equity FUM in ETF's shrink by US$95 billion, though still leaves total FUM of Equity ETF's at nearly US$1.6 trillion.
Doesn't look to me like a "retail investors are spooked" kind of market, or at least not yet.