Your last paragraph is very true.
But I believe that it often goes beyond that in that that's all many players have -- the poor fundamentals. Basically what I'm saying is that a lot of guys get by playing 1pocket on knowledge and a bunt stroke. It's never really a problem of their stroke breaking down because it's already broken. (I mean, if we're really being honest
If an opponent recognizes that, and they have some knowledge of their own, they can almost fire away at will.
I wholeheartedly agree. I play a style not unlike Danny's and Frost's (this style is dominant in Owensboro except for Varner and a couple others) and I typically size a player's stance and stroke up very carefully. If you are not accustomed to doing this, I would offer you two data points. First, watch the travel of the back hand. Second, get in front of them and intensely follow the white of the ferrule on the stroke delivery. If there is any deviation on the tip, hitches, hiccups or steering, the leave-him-long option might be in play.
This is kind of part and parcel of the new one pocket, where, quite literally, one player bets his stroke and shooting technique are better than the other.