In my experience, Safari has been the slowest to implement useful new standards and is the least transparent about bugs and development plans, so it's very hard to act like they're doing us a favor by preventing better and more open browsers from having more marketshare.

Welcome to open standards.

Same happens across OpenGroup, Khronos and ISO standards in the industry.

Apparently what is so great about them, is too much work in what concerns doing the latest shinny thing on the Web.