Is it?
You perceive free will as the norm of your interaction with the world on a daily bias. If it's all you've ever know and will know how can it be a lie?
Illusions are lies, and at the same time, why are you positing that anyone "knows" they have free will? I 'know' I don't. If it's all I've ever not known, what makes you think I have it?
For all intents and purposes the world functions as if free will were real.
It also functions as if free will were
not real.
You're held accountable for your actions, belies, thoughts, etc.
Irrelevant of free agency. Animals are also held accountable for their actions, yet we don't often state that they have free will. Volcanoes are responsible for their pollution, but that doesn't mean they willed pollution.
You're expected to alter behavior based on experiences and access to information, failure to do so is regarded as a choice.
Umm, no. You can't "fail" to do so. Abstaining from a behavior is still a behavior. And "choosing" not to do it is still altering your behavior based on experiences and access to information. The entire idea behind determinism is that that choice is an illusion. You aren't making some metaphysical manipulation of your physical body. Your physical body functions just as a calculator to determine what output it will give based on input it has received (experiences and information). Regardless of whether or not the output is to perform or abstain from a behavior, no metaphysical agency is involved.
The legal and moral vernacular codifies free will as real.
Legal, absolutely. At the same time, does that make it valid? There is a huge problem with people suffering from mental illnesses finding themselves in prisons on the tax payer dollar instead of in institutions that can help them.
As for moral, only to someone who believes in free will. My moral vernacular does not regard free will as real. Why would it?
Even if it's not real humanity experiences what feels and acts like free will from their vantage point.
Most do, for what seems to happen innately. That doesn't make it a real thing, however, or her statement false that only dumb people believe it. Although that's surely wrong, she probably means and you could probably more adequately phrase it, "Only people uneducated in or cognitively dissonant about philosophical matters."
Think of it like this, matter is 98% nothing. There is very little anything anywhere in the universe yet because of your size and the way you perceive things regard most matter as something even though it's really nothing. Still just because the chair you're sitting in is mostly nothing and just because you can reason that doesn't make your chair any less real does it?
Are you high?
What does that have to do with free will?
Oh, and before you go making accusations that only stupid people believe in free will, Albert Einstein spent most the last part of his life trying to prove both free will and the existence of god because he believe in both and felt that nothing made sense without them.
Yeah, some of the smartest people in the history of the world were religious. And some of the smartest people in the history of the world were also non-religious. And many determinist, and many believed in free will. Altogether intelligence has nothing to do with metaphysical matters, but I think her (his? fuck avatars throw me off) statement was more meant how I paraphrased it.