First there was shared-ember-components, Graham spoketh "This is crazy. Every time I touch a component's style, we have to update everything." And so {{date-picker was extracted, and so shall all of the other components.
You should reopen the DatePicker service and override isNativePickerDisplayed. This controls whether or not we display a native <input, or the fancy picker.
Whilst we wait for more desktop browsers to actually support date <inputs with
a built in picker, we have to resort to building one for ourselves. This component
falls back to native datepickers for mobile browsers.