When I told her I’m using Safari from my desktop she was confused. Her helpdesk script literally didn’t have a path in the reply tree for someone using a desktop and not using a chromium based browser. That should tell you how uncommon it must be. I guess everyone’s just using the App now and doesn’t notice.
Either way it gives the impression to non-technical users that non-Chromium browsers are subpar even if site devs are to blame (especially when “upgrade your browser” messaging is misused to equate your up-to-date Safari/Firefox with some derelict version that hasn’t been updated for years) and will only serve to strengthen Chrome’s hold. The only recourse Mozilla and Apple have are to perfectly emulate Chrome’s behavior and in the case of UA sniffing even pretend to be Chrome, which sounds an awful lot like the bad old days of Gecko needing to emulate IE to make sites work in Firefox.
The definition of what is a core feature and what is advanced functionality changes with time. When IE6 came out it was the most advanced browser available, including support for what was considered advanced functionalities back then. But over the long time IE6 existed expectations changed and things which were once advanced or not even thought of were now core. The same is happening with Safari, with the difference that thanks to Apples blocking of different browser engines people cannot just switch to another browser and light a fire under Apples ass.