That's a cliché and is as false as saying that showing respect to your teacher in kendo means never bother him with questions. I tried fencing for three months, and that's enough to say that you're wrong. Preferring kendo to fencing as I do does not mean that fencing is a "reiho-less" sport.
...i know practitioners of stick fighting arts that would disagree. Short of the matter is though, these fights tend to be approached as shinai kendo vs XXXX.... like a stick fight. A shinai is only a stick because it looks like a stick, everything else about it says sword.