You missed the joke. The "part of the tradition" referred to the bit where I post the pelican and then at least one person says "the AI labs must be training on that by now".
You can always ask them to draw something else, as a way to avoid any possible pelican related data contamination; given how popular the pelican test is, I'm sure there's some pelican SVG drawing in the training sets of at least some of these models by now. For instance, you could ask for an SVG drawing of a cyborg bear riding a rocket powered unicycle.
It's a silly fun little benchmark, and because Simon's been doing it for so long, you have a lot of examples over the years to compare. But you can always come up with and run your own test with other drawings.
"How many pelican riding bicycle SVGs were there before this test existed? What if the training data is being polluted with all these wonky results..."