Well I think he's right - and I know him so that really is saying something.
Some people here (no names, no insult intended and no personal attacks) just are not reading what he's saying (he never once advocated flying outside the AFM instructions) or just cannot consider that their SOPs may be based on folklore.
He is being as clear as he can be - it makes sense to me. It surely is self-evident that flap retraction is unrelated to height?
As for those who feel more 'comfortable' not touching levers below 400ft - what about the gear? Do you leave that down? Climb-power? Mode Select? Does it all hang out until AA or is it just the flap lever you won't lay hands upon?
(Just joking - no fight wanted - this really has been an unfeasibly good-natured 6 page thread)