I did not think you were rude at all. As a mater of fact I thank you for reminding me (and the others) of the dangers we play with day to day. You are 100% right. Anyone can read the things we post and learn how to adapt and modify robot systems. Putting some of these instructions together you could cause damage the robot or the operators. Please keep posting things like this to keep us all reminded of the dangers.
By the way I would have sad "armature" rather then inexperienced, that would have really ruffled feathers!