It is indeed a most curious expression! As usual, the Writing Department leave the reader unsure of the exact meaning and the reader is left to conjecture the real meaning.
Another thing immediately 'struck' me about the quoted three paragraphs and that was how nothing seems to have changed. I think of the poor families struggling to get their children along to the Kingdom Halls on time and being fed that pap. Spiritual food - don't make me laugh! Those poor people are fed the husks of the wheat, not the food itself. Poor things! Mrs Ozzie and I are so glad to have changed our diet to one of real food.
Cheers, Ozzie