I have never seen a statement by Bill to that effect, but, ok, not suprising.
Let me restate what I said earlier so it is clear:
Their base oils for the two-cycle oils can be varying mixes of POE, PAO, veggy oils, and veggy esters.
As I stated a number of years ago, When dealing with bio-synthetic formulations, one has to work with the available supply of vegetable oils and esters and have a number of formulations to account for that variable supply situation.