I was asking for scientific angles on why its incorrect, when there are hundreds that confirm the rep intervals and their hypertrophy/strength intervals.
you might want to look over what you posted as the bench example actually proves my point....
Lets say you rep interval, as you posted it 4 seconds.....
do that to on each rep and fail at 4 reps - thats 16 seconds per SET......that is in the "strength" interval....just as you mentioned.
Do the 4 second rep and fail at 12 reps....thats 48 seconds...thats a hypertrophy range.
Dont JUST look at the the individual REP time......the SET time is what is important.