We're there now.

How many people lay out CPU circuits at Intel any more? Computer (using a CPU) does that.

How many people physically make chips at a foundry? "Robots" do that.

There are a lot of tasks in designing and building computers that can only be done with computers these days. Sure, someone runs them, and someone does some significant level of design, but the final designs and products are no longer possible without the very products that those efforts produce.

Lather, rinse, accelerate.

I agree with both of your examples, but the post being responded to involved the replacement of programmers. Until we can come up with a conveniently numeric way of specifying, analyzing, and solving computational problems in the general case, I don't think I need to fear being replaced.

Now, a lot of modern webdev, on the other hand...

nextBigThing = WebBizFactory.createNewSite(ecommerceSingelton.getInstance().createNewMerchantAccount(), socialMediaFlywheel.getInstance().createSocialAdaptor(SocialAdapter.TWITTER), AWS.getInstance().getKVStoreFlavorOfWeek());