Since upgrading to Fedora 25 (Gnome), when I plug in my headset, my computer now

a) properly routes sound to the speakers and sets sound input to the headset's microphone (yay)
b) asks me anyway, in a popup, what kind of thing I just plugged in (why?).

This popup doesn't seem useful, although there may be some benefit I haven't needed in 25 years and never thought of myself. Can I turn off the popup?

This seems to happen to some people using Ubuntu, but I don't see answers online.

Thanks,
Matt