Edit: If you have web developer toolbar installed in Firefox then it is:
Images > Disable Images > Disable Image Animations
I wish I had the magic power of being able to read text with an animated gif next to it without getting distracted every other word that some people apparently have.
But saying "I hate articles riddled with gifs" is far from Marshall McLuhan and Edward Tufte.
Especially since it's not some shallow Buzzfeed post, but a detailed technical explanation of a programming-related issue that the author took time and effort to write -- which makes complaining about its presentation petty.
The author obviously wanted to lighten it up and add some fun elements. And he provided his opinion and expertise for free. These kind of comments can mainly serve to discourage him from writing more, not get him to "improve" his communication.