Agreed. However, if Mastodon instances hosted attached media/images over IPFS, in theory it would lead to a significant decrease in bandwidth that those instanc

Agreed. However, if Mastodon instances hosted attached media/images over IPFS, in theory it would lead to a significant decrease in bandwidth that those instances need to transfer themselves, as that media could be distributed p2p between users who have loaded it already. Thankfully, there already is work being done to implement this kind of functionality, giving instances the option to serve images over IPFS gateways. Further decentralizing Mastodon needs to be a very high priority for it to be sustainable longer term.