Board Thread:Questions and Answers/@comment-194.66.201.10-20151109111740/@comment-99.52.124.139-20160415164734

Propably because the propmasters have no knowledge of runic language, and they just made something that LOOKS nice instead of having a real meaning.

Other thing is Runes have power, and a real runeword on the sword could in the modern world caused some things to happen.

But I think the first theory is a very plausible one.