“So do you endorse the expansive Commerce Clause as being consistent with its original meaning? Yes or No.”
Didn’t I already answer this question, albeit, not with your desired binary selection, but I’m pretty sure I answered it anyway.
Are you for legalizing heroin as “commerce” if a state says it should be legal there? Should beer be harder to get than heroin for a teenager that wants it? Should marijuana be cheaper than a bottle of liquor?
You did not, but no matter; let's try this: Which section of the Constitution do you believe delegates to Congress the power to regulate intrastate drug policies?
Are you for legalizing heroin as “commerce” if a state says it should be legal there?
Yes.
Should beer be harder to get than heroin for a teenager that wants it?
My personal opinion is 'no', but regulatory decisions such as that belong to the States, not Congress, per the Tenth Amendment.
Should marijuana be cheaper than a bottle of liquor?
I don't know and don't care. Let the states decide such tax and regulation questions, rather than Congress.