Strong AI is refuted because syntax is insufficient for semantics.
A wild Aristotelian Teleologist appears!
Phrasing claims in the passive voice to lend an air of authority is grating to the educated ear.
Aside from stylistic concerns, though, I believe you're claiming that electronic circuits don't really mean anything. However, I'm not sure whether you're making the testable claim that no arrangement of electronic circuits will ever perform complicated cross-domain optimization better than a human, or the untestable claim that no electronic circuit will ever really be able to think.
Recent article in The New Yorker:
http://www.newyorker.com/online/blogs/newsdesk/2012/11/ibm-brain-simulation-compass.html
Here is the research report from IBM, with the simple title "10^14":
http://www.modha.org/blog/SC12/RJ10502.pdf
It's nothing like a real brain simulation, of course, but illustrates that hardware to do this is getting very close.
There is likely to be quite a long overhang between the hardware and the software...