Earlier quoted context omitted.
At the speed web development is moving, I don't see much sense in coddling browsers that are more than 2-3 years old.
Naturally that depends on your target audience. I haven't checked the version, but we're stuck on an older IE at work. Possibly 9, but I think it's 8. No choice in the matter.
Does someone have a gun the CEO's head stopping him? He could tell everyone to install latest Chrome or Firefox and have everyone upgraded in 10 minutes.