The people behind this are a real (if silly) student organization at UChicago and Northwestern campaigning for the legalization of onion futures trading. Sometimes they will aggressively hand out free onions to passerby on campus. It's quite entertaining.
They have a website also: https://onionfutures.org
They are not that silly. I am sure they are being secretly funded by the cbot. The idea may seem silly but apparently onion futures trading was big money when it was banned. It was the most lucrative futures contract for the cbot (Chicago board of trade).
Hi! I'm the proprietor of onionfutures.com. I'm actually not a member of UChicago for Our Futures and came up with the idea independently, but we've since connected and they handle our Chicago deliveries.