[duskwuff]

Okay, I think I see the source of the confusion.

What you're describing is a Tor hidden service. Hidden services are separate from the Tor relay network itself, which is what I thought you were referring to as "Tor onions".

Hidden services are optimized for confidentiality over performance. Using them for bulk data storage would place a lot of load on the relay network, and it's not clear what security problem this arrangement would solve.

[mirimir]

Again, sorry.

As far as I know, "hidden service" is deprecated, with "onion service" the current term. And it does tend to get shortened to "onion". But I admit that it was confusing. Because relays used to be called "onion routers". Which is also more or less deprecated, I think.

The security problem is Stores being physically located and compromised, based on IP addresses found in traffic logs.