I completely disagree.
You have to keep in mind the size of your KW list. PPC is, as a general rule, the tool used for large KW lists, whereas SEO is great for sharp-shooting high demand terms (with some exceptions which I won't get into).
Some of my (PPC) clients have keyword lists of 5000 +, which is far easier to manage with PPC than SEO.
You have to go into SEO knowing that, regardless of whether you perceive the SERPs as being "quality", they are going to change because you have competition, which is why a hyrbid SEO / PPC strategy is the best way to go.