No.I read that as: Apple thinks you're too stupid to figure out how to swap out a battery.
"Too stupid" to take it apart - Yes.
About 6 months ago I bought and upgraded a MacMini.
I would not have attempted it if not for the half dozen how-to's I found.
I think taking apart an iPhone is even harder.
If you mean to ask why isn't the battery replaceable without disassembly, then I don't know. I don't think any smartphones have this feature.
It's a bit uncomfortable to find myself in a position defending Apple...
Diogen.