It's not a matter of hating. It's a matter of noticing the gaps in that ungodly argument
Regardless, even if this argument were considered in spite of all this, you'd still be left with an alleged "materialist" putting their faith in the scientific process on one hand, and with the other maintaining the existence of Free Will based on speculation on a topic that they admit we don't understand.
In other words, if a materialist applies the raw scientific process to the idea of choice, they must conclude that they have no solid evidence whatsoever that it actually exists, and a mountain suggesting that it doesn't. To reach this conclusion they need only apply a fraction of the scrutiny that they reserve for, say, religion.
Of course, an added irony is that even if it were proved that there were truly "random" quantum events occuring, they'd still be...well, random. Not the result of choice.
Then again, if you're merely suggesting that there's a lot we don't know and we could discover some sort of "choice molecule," well heck, anything's possible. But there isn't anything solid to rest an argument on, I don't think. Especially not for any individual who exalts the scientific process first and foremost.