Thank god iOS doesn’t have vibration support, we simply don’t want it
It's fine if they want don't want to implement everything.
The point is that if they don't get to simultaneously say:
1. The Web is a viable way to compete with native apps (which they explicitly said in defense in a current court case). 2. While not implementing features necessary to compete. 3. While not allowing anyone else to build a browser for iOS that implements the features necessary to compete.