Interconnect - Does short length hinder sound?

In my efforts to upgrade my Interconnects, I was planning to get the
.5 meter length...as this is all I need to reach each component.

In my conversation with several reputable audio stores, they told me that an excessive short length such as .5 Meter, will actually "hinder" the sound. They recommeded purchasing 1.0 - 1.5 Meters, as it allows the sound to travel more uniformly.

With all the knowledgable people on this forum, has anybody ever heard of this theory?