Argumentum ad Verecundiam. Your training in robotics doesn't has no bearing in in philosophical question "Can we reproduce mechanical life in a lab?" Your training does, however, give you credit to the statement, would it come soon? But I've already said, I agree with you there. It won't be soon.
But to say, "And my point is that -- as someone who did his doctoral work in this field ... I don't see any evidence that we ever will," You're arguing against a Naturalists' belief, that we are biological machines. And being trained in robotics doesn't give you credit for any of your opinions here.
Now to the problems you pointed out:
1> I've already said that I agree with you. I've never said, or even thought, that we are anywhere near this point in technology.
2> I thought we already had a working definition of what a "robot" is? If humans design and create an mechanical/electronic humaniod, how does this not fit the definition or a robot? Because it's not like the robots we have today? That's kinda the point of the discussion. What future robotics might bring.
3> Well, it's a good thing I'm a Naturalist, and already said that this belief is usually just for Naturalists, or else I'd feel like a fool.
Not only is this unproven, it's implausible in the extreme.
Implausible, huh? Do tell.
I'm off to work now.