That's part of what's frustrating about the larger move away from version sniffing (e.g. jQuery no longer supporting it) and IE playing games with its User Agen

That's part of what's frustrating about the larger move away from version sniffing (e.g. jQuery no longer supporting it) and IE playing games with its User Agent string. I'm in favor of it in theory, but in practice there are a handful of things where you simply need to know the browser vendor or version in order to provide a usable page.