"Safari is the new IE6, stop supporting it and let it die."

I can only assume you never went through the pain that IE6 delivered... It has been some years now but I still get nightmares about it. It literally made me question at one time if I didn't made the wrong choice to focus on web development.

Apple may be dragging its feet when adapting new api stuff, but the situation is by no means comparable as what the situation was with IE6. Not by a million miles.