Well, effectively, it means that banks are disallowed from treating it like a currency. So, you could still trade a house for bitcoins, just as you could eggs,

Well, effectively, it means that banks are disallowed from treating it like a currency. So, you could still trade a house for bitcoins, just as you could eggs, in theory, but what you can't do (again, same as eggs) is go to the bank to take out a loan in bitcoin to buy the house. You also can't make payments on a loan with bitcoin, store bitcoin in the bank or expect to accumulate interest (by the bank, disregarding proof-of-stake-type currencies), etc.