Perhaps it is :)
I know someone that has an old MZ250, built around '64. He built himself a hose that at one end had what you would normally use to inflate your tires and at the other end an adapter that would fit the thread to the engine where you screw in the spark plug.
When on the road and you would need to inflate the tire/s, he would just turn the gas fosset to off and then kick start the bike. Of course it would not start, but after a few kicks, the tire is inflated
The above has nothing to do with the tool, but I think it's a funny story, worth mentioning