It is not at all an ad hominem. Disclosure of interests and conflicts for interest were assumed to be declared in the open even a decade ago.

Carter sold his peanut farm to avoid conflicts of interest, Trump launched a coin pump & dump on his first day.

If a Nobel Prize winner works for a corporation, that should be disclosed (the original title contained "Nobel Prize Laureate" instead of "DeepMind Director").

But I suppose that in the current age where everyone just wants to get rich these courtesies no longer matter.