Summary: "Inferior so called 'designers' charge less than me and still get business. I hate that. They're spoiling everything."
Your "summary" appears to be literally the opposite of the point the article makes.
Let me go back and reread it: The author hates the term freelancer because it's used by: 1) people who do work that isn't up to the author's standards (snobbery - it's obviously basically acceptable as people will pay for it, and there is no fixed line between "design" and "not") 2) People who charge little or nothing for their "work" (author doesn't want to identify with a group that has a low-cost low-quality image) 2) people who don't act like an expensive professional (whinge - they're not as good as the author, they are spoiling the image of "freelancers") 3) people who use software the author doesn't think much of use it (snobbery - what does it matter if they use a "common" publishing program?) 4) The above groups, doing low quality work for a low price in a messy fashion, are only wannabe's (unlike the author).
I get the same feeling and summary at a second and third rereading. Summary: people are spoiling things for the author by doing worse work than him at unbeatably cheap prices.