Earlier quoted context omitted.
Would it really matter if parts of your "will" are running on deterministically moving particles or random ones?
Believing in free will or not are different configurations in your mind, leading to different future outcomes. Who are you to disbelieve in anything?
Free will only becomes important on a personal (I do x because it's meaningful to me) or social contexts (I'm responsible for consequences of x action).
I doubt the philosophers are trying to say anything about our day to day lives and that's where most of the opposition is coming from (ie no free will, therefore no meaning in life or responsibilities for anyone).