Dandelions fly away if stockpiled too by your crazy logic. But we can stockpile those. These are all good items worthy of stockpiles. Stockpiles are a new concept and they're great, which is why we want more of them. We can stockpile onions, so why not other foods?
A tools or weapons stockpile would be like said rack, just without building anything and without requiring a brand new building with new mechanics and all that. Hence the suggestion as a stockpile. Feathers take up a large amount of space unnecessarily given how 15 of them takes up 1 crate. That's the same amount of space that is covered by 15 nearly head sized chunks of stone. Or 15 stone axes. Or 15 arrows.
Items, other than seeds, don't stack, so we want stockpiles. And even with seeds, having a mass stockpile of every seed type would be nice. Yes, they "belong in fields" but we only have so much room for fields.
Stop just hating on this because it's different from old H&H, as the stockpiles are a new concept and worth exploring to their full extent.