I think this type of concept is worth exploring. Side channel feedback to the operator of a machine is getting less noticeable. Hard drives don't whirr and click like they used to. Cars don't have transmissions that shift.

When you pick up a physical object with your hands, you don't assume the heavier the object, the more important it is. Same with file size.

But if you pick up your carton of eggs every morning you'll know if you have enough left to make an omelette.

If you make a backups it would be nice feedback to feel it weigh about what you expected. When making room on a disk you could juggle a few folders to feel if they'll fit or not.

There was some advanced facility (nuclear reactor? particle accelerator?) that laid microphones near the machinery and put various speakers in the ceiling of the control room; helped precisely detect and pinpoint problems immediately.

That said I'll prefer just seeing the size of the file or folder in bytes as a number.

I'm personally more interested in feeling other system metrics, like network traffic or memory bandwidth.