I disagree. The onus is entirely on the user to backup his/her data.
Don't use remote wipe unless you have a backup solution. I mean seriously, the very concept of remote wiping, whether intended or not, should make you buy an external hard drive and activate Time Machine. Because a remote wipe could happen in a database-server glitch on Apple's part, which would presumably bypass a passphrase mechanism. So why leave your data to chance?
But the other reason to not have a passphrase...what is the purpose of having a remote wipe? Because you are paranoid that ot only someone will steal your laptop, but that they'll steal the data. Depending on your work situation, time could be the main factor here. What happens if you forget your passphrase...because really, how often are you going to be using that passphrase? Then you've given your robber minutes/hours to access your data.
Just to be clear, the verification process is still incredibly flawed on Apple's part, and the remote-wipe problem should not have happened in the first place. But enabling any kind of remote-wipe-power without thinking through the backup process is Honan's fault, as he admits in his article.