Yup. We're going where the puck is going.

15% are only still on IE because it still works. If more devs start doing this you will be excluding 0% of users.

Even Microsoft is telling people not to use ie11.

Yes and no. For many use cases, this might be justified.

* You are hosting an internal enterprise application and you are forcing all of your employee desktops to use Chrome any case.

* You are not serving a web site, but a business web app, which only works on a modern browser - because it is a business oriented app people are willing to switch the browser to use it. E.g. 3d modeler.