I dare you to find any analytics, anywhere, that show any IE 11 usage.

It would be utterly negligent to still be running IE in a corporate environment. It’s a huge security risk.

Just recently I stumbled on some god forsaken pc hooked up to a projector in some conference room.

It had Windows 7 with guess what browser built-in. It had Chrome also, thank god (that’s how I know it is no longer updated by Google under 7).

But that’s not the point. The thing is 2015’s state of affairs is good enough for dare I say most UI.

Yeah, grid is not there, but there are very specific UIs that need what flex cannot provide.

PostCSS takes care for most other legacy things