iOS latency is still well above what's noticable by human perception. Tack on to that all of the delays you get once you're running a newer version of iOS on ol

iOS latency is still well above what's noticable by human perception. Tack on to that all of the delays you get once you're running a newer version of iOS on older devices (which I suspect is the majority of people using Apple products) and I think it's pretty obvious that there's less of a gap in how people perceive the interaction model than you're suggesting.