Uh no its not, an intentional scoop is a foul, miscuing when trying to draw the ball as noted in the OP is rarely a foul.
I've played in a few places that say "all" miscues are fouls regardless if the cue ball makes contact with ob or not.
Then again, I play in other places that don't consider a miscue a foul as long as the cb doesn't leave table and also makes contact with ob and a rail if playing BIH.
I don't mind playing either way.
When playing cheap sets, most of the people I play very, very seldom miss position, much less miscue.
I never worry about an opponent's miscues unless they do it at a time where it would benefit them (no ball in hand....to keep from hitting a ball or such). Even then, I don't worry about it unless they do it often.
In the end, a miscue, in my experience almost always means BIH because more times than not, the cb either doesn't hit the ob/rail or it leaves the table.
But to say a miscue is automatically a foul is a little to scientific to me because I believe one can cause the cb to leave the surface without ferrule touching the cb when using extreme bottom and a choppy/elevated stroke combined with enough stroke speed.
Jeff