The obsession with control I find objectionable is not their decision not to enable emoji widely until support was stable. That's an obsession with polish, not control. The commitment to polish and self-restraint to not add features until they actually work well is something I've long appreciated about Apple.
The control part is blocking third-party apps to toggle the hidden setting. If you enable unsupported features using a third-party app, the expectation of polish is obviously void. It would even be fine if Apple refused to carry apps like that in their polished, curated store, if they didn't forbid users from installing apps any other way.