Not true. Periods of abnormally low volume are normally the calm before the storm. Usually the move following a period of low volume is substantial. Lower volume during an uptrend usually indicates buyers are losing interest and lower volume during a downtrend means sellers are almost done selling.
There've been a ton of low volume phases in the last year or more. Lots of people wheel out the calm before the storm line then not a goddamn bean occurs for another few weeks or months. Sometimes low volume just means good old sideways and boredom.