We also initially planned a laundry chute but then removed it again (due to fear of noise nuisance from the utility room).
You just must never completely empty the chute, then the soundproofing will work.;) Who makes noise in your utility room?
I can't say I miss it. Whether I carry the laundry down in a basket or throw it down the chute – I have to sort it downstairs anyway.
It's not primarily about sorting. There is never dirty laundry lying around in the bathroom (in a basket), flap open, in, flap closed, done. And it even works the other way around. In about 2 weeks, it will be washed and ironed in the closet again.:D