The point is that the first list is a series of (flawed) reasons that the author, and probably many others, have been discouraged from blogging.
And even if you know they're flawed, it can still get in your head and discourage you, so the author provides a different list of reasons to still blog in spite of that. It's not meant as proving/disproving any of the points, but simply as motivation to keep going.
And even if you know they're flawed, it can still get in your head and discourage you, so the author provides a different list of reasons to still blog in spite of that. It's not meant as proving/disproving any of the points, but simply as motivation to keep going.