The labor is ridiculously cheap after the lira crash, raw materials for practically anything can be sourced domestically, and it's right in the neighborhood of everywhere except America and China.
Like I said, I don't work in the field, so it would be pointless for me to try and construct an argument beyond the obvious points that Turkey has weak currency, close vicinity to Europe (i.e. inside Europe), strong defense, abundant natural resources, foreign capital inflows, capitalistic laws and plenty of working-age people. I don't know anything, really.
The author was calling for ideas, and it's just an idea. Take it, or leave it. Of course, there's unique problems to deal with too, which you wouldn't find in China (threat of political instability and "boş ver attitude" being two of them). But nothing lasts forever and the world's honeymoon with China is no exception.