I was a little bit disappointed when I discovered which type of hamburger menu they were talking about, I initially thought this article was going to address issues with the common types of sandwiches provided by fast food restaurants. But otherwise, I agree with the points stated in this article.

Although I would put my links in a <nav> section at the bottom of the page above the footer instead of inside the footer itself. Putting links in the header or the footer always seems to cause accessibility issues.

Or better yet, I would put links to the two or three most prevalent pages of the site as well as a link to a separate sitemap page in a navigation section under the header, so it would be something like:

"Home - About - Projects - Sitemap".