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If you hit the notes in time, then I see no problem.
The point is if you hit the note in perfect time with your right hand but your left hand is late making the stop you get a flub, and if you hit the note in perfect time with your right but your left hand is early making the stop you get an unintended acciaccatura (or dead air and rhythmic 'disturbance' caused by cutting the previous note short). As tempo increases and the timing discrepancies approach the intended note durations you end up making no sound whatsoever.
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