GPP's phrasing seems to be non-mutex such that it explicitly does not say that, e.g. "smart developers do not create"

Maybe a more encompassing way of stating the saw would be "while a good developer can create what is required, a smart developer will use what is provided"

All saying aside, this guy isn't even sure he wants to blog. Unless he's selling blogging software, his time would be better spent working on his product, marketing, etc instead of rolling his own blogging software.

Wordpress is so easy to setup that it's probably taking me longer to write this comment than it would be for him to setup Wordpress.

He's saying "Don't reinvent the wheel."

Use what's available when you can, as it will save you time and money. Make what is not available already.