I believe Gibson knows the difference between a finished fretboard piece and a slab of rosewood or ebony which can bee sawn into fretboards. Or should know it.
And give me a break, Gibson Inc is not "a small business". They are a century old company with an upmarket product sold internationally, headed and owned by investment bankers for the last 25 years, worldwide sales in the hundreds of millions and a workforce of no less than 2.800. That doesn't make it GE, GM, Apple or Microsoft, but one of the giants in the music market, only Fender is larger in the US. They are a mid-sized company, nothing less. Henry J, however, acts as if the Feds led him out of the carpentry in a leather apron while he was honing maho necks ...
And another thing: The confiscated wood has a value of only 200,000 USD, while that is money too, Gibson probably saws up guitars and basses in excess value every month for not meeting their standards.