Hardware trojans messing with chip production

Trust me.

No. Why should I? By your logic, I have to assume that the NSA are getting up to every dirty trick that is possible. Which includes the obvious dirty trick of planting false claims that microchip security has been breached. Or even planting people on forums to spread stories that microchip security has been breached, come to that.

Whether the story is true or not should actually make no difference to most people anyway - if you are that worried about security, don't use a computer for anything you don't want others to know about. That was good advice before this story came out, and it is good advice now. Worrying about dopant-level tampering on microchips while using an operating system you can't be sure hasn't been tampered with anyway is rather pointless.