That’s good internetdebatesmanship, but if the post was “Firefox spent years optimizing thing no one ever uses at all”, it’s easy to imagine the ire that would raise for people who just wanted their keys not to be inexplicably lost under a streetlight.

Well, at some point, you have to make choices. If you don't have enough developers, you can either optimize features that users are using or features that users aren't using because they _might_ use them some day.

If you do the former, there is a chance you may be missing out. You do the latter, you are certain that you are missing out.