When someone tells me that a product supports long file names without also telling me of any limitations, I should assume that the product fully supports long file names. Not just some minimal support in limited areas.
I can't help but remembering someone saying "It depends on what your definition of is is."
The KN7000 is a fantastic keyboard. It does not need to be defended in any way. Information needs to be both factual and complete.
Enough said. The forum members now know the limitations.