Yep, you could well be right. I don't know enough about consumer law to argue against that. To me, it's simply what Apple call it and how we're taught to deal with them.
Either way, the OP should still go to Apple or an AASP, and mention it. If it's faulty, and not caused by accidental damage, they will repair it free. Getting low battery life after 216 charge cycles over a 2/3 year period is not normal and not fit for purpose. They will be able to tell through their diagnostics.
