I guess this is where I confess to MANY neutral drops in Dad's '66 Sport Fury; that trans went over 130K before he had it rebuilt, and I don't recall it actually needing that.
That said, I've been told by a couple of Torqueflite guys to never let off the throttle in low on a deal like the OP's, which I've also had in a street car. No biggie to "obey".
The TF can be pretty spectacular at the drags when one hatches - I think all of us have seen those photos - so that's the mental image folks get.