That's right. But my point is satoshi suggesting to store arbitrary data on different network, while OP's idea store arbitrary data on Bitcoin on-chain network. That could be used as argument against storing arbitary data on-chain.
I guess you misunderstood me or I misunderstood your previous reply to my post, thinking that you were suggesting that satoshi was ok with users storing arbitrary data on the Bitcoin blockchain. With this second post of yours, that doesn't seem to be the case, so I take your previous reply not as correction but a supplement and adding some more information.