By "AMD's chips", they clearly meant chips marketed and sold under AMD's brand. If you're trying to make the point that TSMC deserves the real credit for competing with Intel, then just say that.
You don't think it's important to make the distinction between chip design and manufacturing?
Intel has clearly failed with regards to manufacturing new nodes, but is the chip design really that bad when they could compete for a long time with a large node disadvantage?
They almost never competed in the dictionary sense of the word, historically. They have plenty of shady tactics to gain more market share. Assuming that the "free market" works -- or that it even exists -- is way too charitable and optimistic of you.