No one is blaming you for wanting to be careful with the art, if you feel uncomfortable teaching it to certain people then don't. Thing is try to be a "bit" less pessimistic. Currently BOTH of our unique racial arts are in a state of limbo, stuck with you at college. The only reason some people ask you in OOC for it is because thats the only way we can contact you right now. Also, don't assume that all the dwarves want it for being "more powerful" I thought it would be a lot of fun and I didn't want it to die out/ stay in this limbo. That's why I wanted it anyways. If you wait to long for just the right person to teach then the art WILL stay in limbo. And what happens when they decide to teach someone? (when they can of course) you can't monitor a whole races unique RP ability, to do so is just dampening it for the rest of the dwarves. You want a fun art? Make it so. Drop the student if they use it militarily. Hell, we can even pass a law banning its over use in military activitys.
Long story short, there are still many options available for you Dave, just don't keep it locked up in this state of limbo