As you can see by the top image, the post in question doesn’t appear for me in oppo. Magic? No, Kinja Blocker. You type the name of the author in question into and Kinja Blocker does the rest. If you’re using Chrome you should really ad it to your browser. Here is the link.
It also works for people in oppo, so if someone decides to have their own theme day you don’t have to see their posts. It’s not permeant and you can remove them from your list when they decide to change the frequency of posting their personal car.