Safari is today's Internet Explorer in terms of holding the web back.
I'm sure it's wrong to "hold the web back", but I'm also afraid of when Google finally takes over the internet. Because those "don't be evil"-days are in the past.
Food for thought:
Have you ever considered that the demand for this functionality in the browser only exists because it is forbidden natively? I've got no use for cross-platform 3D APIs, game streaming functionality or even WebRTC in my browser when it comes down to it; but it makes plain sense that people want to push this functionality to the browser because Apple resists it natively. That's just supply/demand at work.
I’m talking specifically about having access to the bluetooth stack, having access to the device’s vibrations, etc.
Chrome's reckless and indifferent approach of including every API under the sun is being used by advertisers today to track users through comprehensive browser fingerprinting.