exactly, these jokers that can't do the math themselves and rely on silly memos to spam the net is annoying. He gives one extreme example to "prove" his point. It really all depends on how many/much change in direction there is relative to the aggregate move in one direction of the there.
This only applies to the SHORT leveraged ETF's. SSO can be held long term with little risk of distortion. In addition, the volatility in the market has been at historical levels so using any performance examples from the past twelve months is a ridiculous.