There may be an easy fix, but right now when used with 'nodewords' enabled, almost everything can be turned off except the "Dublin Core date" - which seems to be an oddly structured form element and not detected as something which can be disabled.
I can turn off the individual select elements, but still see the element title on the page.

A bit awkward.
It MAY be just a question of adding the 'date' form element to formfilter_supported_types()
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Yep, that works!