Yes, but now you can at least plan/schedule downtime according to your particular needs, and unscheduled downtime is at least a little more transparent to you. Sounds like that's what the original article wanted, in any case.
That's a legitimate benefit, although I was suggesting it's offset by the greater chance of something going wrong when you are managing your own servers, especially if you're not an expert sysadmin. I would assume Heroku instances are secured better than a box you're locking down yourself.
