"Competent" is another relative word. What criteria would deem someone as 'competent' in your opinion...? I consider myself competent, but also don't kid myself about what happens when I either either hit down on the CB or hit it above the equator with light pace.
I'm confident because I'm not speaking in terms of bias opinion, but from experience and a knowledge base of watching the average joe play the game. When a blanket statement is made about what is normal in the game. The I use the average across the board to measure that statement. Not the select (potentially competent) minority.
If you had focused your comment on say the play of pros. You would not have seen a rebuttal from me. Although you may still be on the wrong side of the discussion. However the general sweeping statement lowers the bar considerably.
Nope, I entered the experiment naive to the purpose. This was way back in my snooker days when I was first learning the physics behind what's going on. My mentor at the time was just running the gambit of demonstrations to enhance my understanding. I could repeat the experiment now and the results wouldn't be any different. I could also, with purpose, not clear the match stick to a certain point. Eventually the shot involved in the experiment will either require a force great enough or a cueing angle steep enough to generate hop.