Well you might not want to comment further 9 points but I will.
I've done low speed aborts with engine failure in the sim and never was a problem, NEVER had any instructor or fellow Pilot advocate your 'technique'
Never flown an Airbus that's true but I'd like to hear from any other AB Pilot that advocates this, in fact I don't think that's their intention from the excerpt you've included.
After all they don't actually state 'place your feet up on the rudder pedals for take off'
I think it's just your interpretation and It doesn't seem right to me, it sure isn't on any Boeing.