Right, this is true for software in general. You don't optimize for out-of-date hardware and an older battery is not going to fare well with a new iOS update doing different things with your files and make the adjustments it needs to in the first few days or weeks.
Well, Zuck's dog Beast has a profile with a million likes and since a human is actually operating it, it is as legitimate a profile as yours or your pet snake's (assuming you keep it active)