It ossifies the namespace. As in, you can't have a name that is both reasonable and can coexist with the current DNS model. Any of .onion, .bit, .coin, .eth, .

It ossifies the namespace. As in, you can't have a name that is both reasonable and can coexist with the current DNS model. Any of .onion, .bit, .coin, .eth, .crypto, .zil, can expect the .dev treatment, or, in time there won't be many nice available one for future developments. Similar issue might be with things like .ipfs, which don't resolve in the usual sense, but could cause confusion if there was an ICANN .ipfs domain. Some domain trader will come and say those aren't "real" names, and you are supposed to rent them from ICANN, but that seems like a protection racket.