I would agree with that. Individual fish and not necessarily their whole genus. There are "impulsive" fish, if under the right conditions, are more inclined to be susceptible to whatever we throw at them than maybe their step-cousins of the same species. But I also think, without stating the obvious, that it is very easy to recognize a generalized scale of susceptibility between species under a whole range of conditions.
I've had baits barely touch the water and consumed in that instance - pure impulse. Smart, educated fish, but foolish for that moment in time. I'm sure they saw it flying in the air well before it hit water. Genetically programmed to react quickly. Same fish, under slightly different conditions . . . I don't know . . . .less cloud cover, more cloud cover, a temp swing 1 or 2 degrees moving up or down, maybe not as dumb? Its an endless mix of variables and that is what keeps me fascinated